▐▛███▛█ Claude Code v2.1.284 ▝▜██████▀ Sonnet 5.5 · Claude Pro ▝▝ ▝▝ ~/dev/linput ▎ Your voice can help guide AI ▎ Take 15 min to share your experiences with Anthropic Interviewer. Start now ❯ hi how to put all networking to proxy 10.128.97.214:9910, which is current hotspot. ● The right method depends on the proxy type (HTTP or SOCKS5) and on how much you want covered. Three levels: 1. Shell and CLI tools (env vars) export http_proxy=http://10.128.97.214:9910 export https_proxy=http://10.128.97.214:9910 export all_proxy=http://10.128.97.214:9910 # or socks5://... if it's SOCKS export no_proxy=localhost,127.0.0.1,10.0.0.0/8 This covers curl, pip, git, apt (apt also needs Acquire::http::Proxy in /etc/apt/apt.conf.d/) and Claude Code. It only covers apps that honor these variables. 2. Desktop system proxy (GNOME) gsettings set org.gnome.system.proxy mode 'manual' gsettings set org.gnome.system.proxy.http host '10.128.97.214' gsettings set org.gnome.system.proxy.http port 9910 gsettings set org.gnome.system.proxy.https host '10.128.97.214' gsettings set org.gnome.system.proxy.https port 9910 This covers browsers and GTK apps. To undo it, run gsettings set org.gnome.system.proxy mode 'none'. 3. Everything, including apps that ignore proxies (transparent) Use tun2socks, which creates a TUN device and routes all traffic through the proxy. It supports both HTTP and SOCKS5. sudo ip tuntap add dev tun0 mode tun sudo ip addr add 198.18.0.1/15 dev tun0 sudo ip link set tun0 up sudo tun2socks -device tun0 -proxy http://10.128.97.214:9910 # or socks5:// # keep the proxy itself off the tunnel, then send the rest through tun0 sudo ip route add 10.128.97.214 via dev sudo ip route add default dev tun0 metric 1 Two caveats: - Plain HTTP proxies can't carry UDP or DNS. For DNS you'd need a SOCKS5 proxy with UDP support, or a local resolver. - Don't route the proxy's own traffic through the tunnel. That's what the explicit route to 10.128.97.214 is for. Line by line 1. ip tuntap add dev tun0 mode tun creates a virtual network interface. Packets sent to it go to a userspace program, not to hardware. 2. ip addr add 198.18.0.1/15 dev tun0 gives it an address in 198.18.0.0/15, a range reserved for benchmarking. It's a common choice because it won't collide with real networks. 3. ip link set tun0 up turns the interface on. 4. tun2socks -device tun0 -proxy http://10.128.97.214:9910 reads raw IP packets from tun0. It reassembles the TCP connections inside them and re-opens each one through the proxy using HTTP CONNECT (or SOCKS5 if you use socks5://). It acts as a userspace TCP/IP stack that translates packets into proxy requests. 5. ip route add 10.128.97.214 via dev adds a specific route so that traffic to the proxy itself goes out the real Wi-Fi interface. Without it, the proxy's own connection would be routed into tun0, and tun2socks would end up feeding its own output back to itself. 6. ip route add default dev tun0 metric 1 makes tun0 the default route. Every other destination now goes through the tunnel and so through the proxy. This is why the order matters: the proxy exception goes in before the default route. The net effect An application sends a packet to, say, 93.184.216.34:443, believing it's talking directly. The kernel routess it up and asks the proxy to connect to that destinate traffic. The app never needs to know a proxy existms that ignore HTTP_PROXY settings. The caveats - HTTP CONNECT proxies onlyrmal DNS, won't pass through. DNS either fails unless you use a SOCKS5 proxy with UDP associate S over TCP/HTTPS). - If you forget the proxy-eting loop and nothing works. - It needs root, and is simpler. Is the proxy HTTP or SOCKS5? Do you want the browser covered, or really every app? With that I can give you exact commands. To undo it sudo ip route del default dev tun0 sudo ip link del tun0 Deleting tun0 also removes its routes. The 10.128.97.214 host route can stay or be deleted. Which network is the proxy on? That would help me judge whether it's hotspot-specific or a general setup. I can also help test it or write it into a script. --- It's not in the standard apt repos. Two different programs share the name: - xjasonlyu/tun2socks (Go) is the one my command's flags (-device, -proxy) belong to. It supports HTTP and SOCKS5. Get it from the GitHub releases page (tun2socks-linux-amd64.zip), or build it with go install github.com/xjasonlyu/tun2socks/v2@latest. - badvpn-tun2socks is in apt as badvpn. It's an older tool with different flags (--tundev, --socks-server-addr) and only supports SOCKS5. My commands wouldn't work as written with it. I'd use xjasonlyu's. After downloading, run chmod +x and move it to /usr/local/bin/tun2socks. On DNS You're right. Local DNS getver sees the request, so the tunnel alone doesn't fix itproblem because the appresolves the name locally and then sends the IP over the tunnel. Options, from simplest to most robust: 1. Resolve over the tunnel. upstream resolver such as8.8.8.8 or 1.1.1.1. A TCP-only resolver works through an HTTP proxy, and a local forwarder such as dnscryS-over-TCP or DNS-over-HTTPS. If the r the query exits at the proxy, so the poisoning ddress, not a hostname, avoids another local loo 2. Use a SOCKS5 proxy with to 8.8.8.8 goes through the tunnel as-is. 3. Use a tool with fake-ip sh.Meta) have TUN modes that hijack DNS queries and real domain name goes to the proxy, and the proxy rese standard fix for this problem, and it makes los also more work to configure than tun2socks If your proxy is HTTP only,ed. Which one do you want to set up? --- Don't worry: the setup is very hard to lock yourself out with, because every command in it is temporary. `ip route`, `ip tuntap` and `ip addr` changes live only in memory, so a reboot, or just `sudo ip link del tun0`, puts the network back exactly as it was. None of it touches your Wi-Fi association with the hotspot. Here's a safe order that doesn't change any routing until the proxy is proven to work. **1. Save your current state** ``` ip route > ~/routes.before cat /etc/resolv.conf > ~/resolv.before ``` **2. Test the proxies on their own, with no tun at all** ``` curl -x socks5h://hotspot:9909 https://ifconfig.me curl -x http://hotspot:9910 https://ifconfig.me ``` `socks5h` makes the proxy resolve the hostname, so poisoned local DNS doesn't matter. If either command prints an IP address, the proxy works. A browser or `proxychains4` may already be enough, with no TUN needed. Use the SOCKS5 port (9909) if you can. It's the better protocol here, and it may support UDP. **3. If you do want the TUN, test it with one destination first** ``` sudo ip route add 1.1.1.1 dev tun0 curl --interface tun0 https://1.1.1.1 ``` This checks the whole tunnel path before the default route changes. **4. Switch the default route with an automatic rollback** ``` sudo bash -c 'ip route add default dev tun0 metric 1; sleep 90; ip route del default dev tun0' ``` If something breaks, you do nothing, and after 90 seconds the route is removed and you're back online. If it works, run `ip route add default dev tun0 metric 1` yourself afterwards. Two more points: - The proxy is on the same hotspot network, so a route to it probably already exists via the connected subnet. The explicit exception route is probably redundant, but it's harmless and protects against a routing loop. - If the hotspot is your only way online, keep one terminal logged in with the undo commands already typed: `sudo ip link del tun0`. Is `hotspot` a hostname, and does it resolve? If it doesn't, we should use its IP address in every command, because name resolution is the first thing that could fail. ✻ Cogitated for 10s · done 7:23 AM ❯ /auto-mode-setup ⎿ Gathering data and drafting your auto-mode setup; back soon ● Saved to /home/za/.claude/settings.json (environment). Run `claude auto-mode config` to see the effective result. ❯ hi, this tmux pane, and this claude cli is already go through proxy. 2, why not use nmcli to apply proxy for the current wifi? ● nmcli can't set a manual proxy. NetworkManager's per-connection proxy.* settings only cover PAC (auto-config): nmcli connection modify proxy.method auto proxy.pac-url http://host/proxy.pac # or inline: proxy.pac-script '' There's no proxy.http-host or proxy.port field. Even with PAC, it has two limits: - NetworkManager only hands the PAC to a helper (pacrunner/libproxy). It doesn't enforce anything. Apps that don't query that helper ignore it, so it works about as well as the GNOME setting. - You'd have to write a PAC file like this: function FindProxyForURL(url, host) { return "PROXY 10.128.97.214:9910"; } and serve it, or paste it into proxy.pac-script. For a per-Wi-Fi proxy that switches on and off with the connection, there are two options: 1. PAC via nmcli, as above. It's the most "native" option but the least reliable. 2. NetworkManager dispatcher script in /etc/NetworkManager/dispatcher.d/. It runs gsettings (or edits /etc/environment / the apt config) when that SSID goes up or down. It's more work but dependable. Since your tmux pane and Claude CLI already go through the proxy, the gap is probably just GUI apps and the browser. For those, the gsettings commands from before are the quickest fix. Should I write the dispatcher script so the proxy switches on only when you're on the hotspot? ✻ Baked for 7s · done 7:27 AM ❯ http proxy 10.128.97.214:9910 , socks5 10.128.97.214:9910 , The option 3 is good, tun2socks But the network just connected, let's wait a while to apply tun2socks. so, for now, use the laptop network as it untill i hit new conditions. By the way, could we plan a backup solution over host lightsail.a ? command line options are my preferred solution. Searched for 1 pattern (ctrl+o to expand) ● lightsail.a is an SSH host (13.125.209.14, user admin). Only rsync is installed. Neither tun2socks, autossh, restic nor borg is. "Backup solution" could mean two things, so which one do you want? A. Backup network path (fallback proxy). If the hotspot proxy dies, you switch to a SOCKS5 proxy through lightsail: ssh -D 1080 -N -f lightsail.a # SOCKS5 on 127.0.0.1:1080 Then point tun2socks, env vars or proxychains at socks5://127.0.0.1:1080. autossh or a systemd user unit would keep the tunnel alive. Because it's a normal SOCKS5 endpoint, it plugs straight into the tun2socks plan, so you'd only change the -proxy value to fail over. B. Backup of your files to lightsail. For example ~/dev/linput, with git as the first layer: - Simplest: rsync -az --delete ~/dev/linput/ lightsail.a:backup/linput/ - Versioned and deduplicated: restic -r sftp:lightsail.a:/home/admin/restic init, then restic backup ~/dev. Needs apt install restic. - Git: git remote add lightsail lightsail.a:repos/linput.git, then push. This only covers committed work, so the file-level options above are better for everything else. I can write either one as a short script. If you meant both, say so and I'll plan them together. If B, tell me what to back up and how often (manual or a systemd timer). ✻ Churned for 12s · done 7:40 AM ❯ /plan ⎿ Enabled plan mode ❯ i want figure out a solution to use vps as back proxy or network bypassing bridge with some of the followings: vless, reality, naiveproxy, hysteria2, trojan, argo, cloudflare cdn, cloudflare workers ● User declined to answer questions ⎿  · Do you have a domain name you can point at Cloudflare (and at the VPS)? (Yes, on Cloudflare / Yes, elsewhere / No domain) · What is the main problem the bridge must solve? (Fallback when hotspot proxy dies / Bypass blocking/DPI / Both) · How should the laptop use the protocols? (sing-box (Recommended) / Xray-core + tun2socks / Separate client per protocol) ● Which of the three questions was unclear, or is there something else you'd like to add first? For example, you may already have a domain or a preferred client, or you may want a different goal from the one I assumed. Tell me what to change and I'll redo the questions. ✻ Sautéed for 10s · done 7:44 AM ❯ we have a domain name sosweb.org, cloudflare is ok if it's still working. Ran 1 shell command (ctrl+o to expand) ● DNS lookups are timing out on this laptop (likely due to the new hotspot network), so I can't confirm if sosweb.org is still on Cloudflare—I'll check later via the proxy or from Lightsail. A couple of questions remain. · summary ● User declined to answer questions ⎿  · What is the main problem the bridge must solve? (Both (Recommended) / Fallback only / Bypass blocking/DPI) · Which client approach do you prefer on the laptop? (sing-box (Recommended) / Xray + tun2socks / Separate client per protocol) ● Updated plan ⎿  /plan to preview ● User approved Claude's plan ⎿  Plan saved to: ~/.claude/plans/i-want-figure-out-ticklish-lemur.md · /plan to edit Plan: VPS bypass bridge (lightsail.a + sosweb.org) Context Laptop currently reaches the net via a hotspot HTTP/SOCKS5 proxy (10.128.97.214:9910). Want a DPI-resistant backup path through the VPS lightsail.a (13.125.209.14, Seoul, user admin) using domain sosweb.org (Cloudflare status unverified; laptop DNS currently timing out on the hotspot). Goal chosen: bypass blocking/DPI (stealth first). Client choice not answered -> default sing-box. Command-line only. Nothing is changed until this plan is approved. Architecture (layered, stealth-first) Server: one sing-box on the VPS, several inbounds. Client: one sing-box with TUN (replaces tun2socks) and a urltest/selector outbound that fails over between the paths. ┌──────┬────────────────────────────┬───────────────────┬────────────────┐ │ Rank │ Path │ Why │ Needs │ ├──────┼────────────────────────────┼───────────────────┼────────────────┤ │ │ VLESS + Reality (tcp/443, │ No cert/domain │ borrowed SNI │ │ 1 │ xtls-rprx-vision) │ needed, mimics │ (e.g. a big │ │ │ │ real TLS site │ CDN site) │ ├──────┼────────────────────────────┼───────────────────┼────────────────┤ │ │ Hysteria2 (udp/443 or high │ Fast on lossy │ real cert for │ │ 2 │ port, salamander obfs) │ links; UDP may be │ sosweb.org │ │ │ │ throttled │ subdomain │ ├──────┼────────────────────────────┼───────────────────┼────────────────┤ │ │ Trojan or NaiveProxy │ Looks like normal │ cert + decoy │ │ 3 │ (tcp/443 behind │ HTTPS site │ site │ │ │ Caddy/nginx fallback site) │ │ │ ├──────┼────────────────────────────┼───────────────────┼────────────────┤ │ │ VLESS over WebSocket via │ Works when VPS IP │ domain proxied │ │ 4 │ Cloudflare CDN │ is blocked │ on CF │ │ │ (orange-cloud) │ │ │ ├──────┼────────────────────────────┼───────────────────┼────────────────┤ │ 5 │ Cloudflare Tunnel │ No inbound port, │ CF account, │ │ │ (cloudflared / Argo) │ hides VPS IP │ tunnel token │ ├──────┼────────────────────────────┼───────────────────┼────────────────┤ │ │ │ Last resort, low │ │ │ 6 │ Cloudflare Workers relay │ throughput, │ Worker script │ │ │ │ ToS-limited │ │ └──────┴────────────────────────────┴───────────────────┴────────────────┘ Recommended build order: 1 -> 2 -> 4 -> 3 -> 5 -> 6. Stop when coverage is enough; 1+2+4 is the core. Steps 1. Read-only recon (ssh lightsail.a): OS, open ports, existing services on 80/443, Lightsail firewall rules, sing-box/caddy presence. Confirm sosweb.org NS (dig via proxy/lightsail). 2. DNS: ensure sosweb.org on Cloudflare; subdomains: r. (DNS only, Reality/hy2), cdn. (proxied). 3. Server install: sing-box from official apt/release, systemd unit, config in /etc/sing-box/, generated UUIDs/keys (sing-box generate reality-keypair). Open Lightsail firewall: tcp/443, udp/443. 4. Cert: acme.sh or sing-box built-in ACME (DNS-01 via Cloudflare API token) for hy2/trojan. 5. Add inbounds in the build order above; keep a decoy site on 443 fallback. 6. Client: install sing-box on laptop; config with TUN inbound, auto_route, strict_route; outbounds for each path + urltest; route the VPS IP direct to avoid loops; DNS over the tunnel (fixes the current DNS timeouts). Run as systemd service, toggled by command (sudo systemctl start sing-box). 7. Hotspot coexistence: add the hotspot proxy as an outbound http/socks in the same selector so one tool covers both paths. 8. Hardening: ufw/Lightsail firewall, SSH key-only, fail2ban, unattended-upgrades, no logs of destinations. Critical files - VPS: /etc/sing-box/config.json, /etc/systemd/system/sing-box.service, Caddy/nginx decoy config - Laptop: /etc/sing-box/config.json (or ~/.config/sing-box/), systemd unit - Local ssh alias already exists: ~/.ssh/config -> Host lightsail.a - Optionally keep configs in the repo (not secrets): a net/ dir, with keys in .gitignore Verification - Server: sing-box check -c config.json, ss -tulpn shows 443 tcp/udp, journalctl -u sing-box. - Client per path: curl --proxy socks5h://127.0.0.1: https://ifconfig.me returns 13.125.209.14. - TUN: curl https://ifconfig.me (no proxy flags) returns VPS IP; dig example.com resolves. - Failover: block path 1 (iptables drop) and confirm urltest moves to the next. - Leak check: no DNS or IPv6 leak (ip -6 route, dnsleaktest-style query). Open items - Whether sosweb.org is still active on Cloudflare (verify once DNS works). - Client confirmation (sing-box assumed). - Cloudflare Workers/Argo are lowest priority; included only if the earlier paths prove insufficient. ● Starting with step 1, read-only recon of the VPS. Ran 2 shell commands (ctrl+o to expand) ❯ for sing-box, we have server - client 2 sides. I want to know the client side app. ● Client side: you use the same sing-box binary as on the server, with a client config. It's a single CLI program, which fits your command-line preference. There's no separate client app to install. - Linux laptop: install sing-box from the official SagerNet apt repo or the release tarball. The config has a tun inbound, one outbound per path (VLESS Reality, hy2, trojan, ws via CDN) and a urltest selector. It runs as a systemd service. sudo systemctl start sing-box turns the whole laptop's traffic on, and stop turns it off. This replaces tun2socks. - Phone (your termux-phone): use SFA (sing-box for Android) with the same outbound JSON. Hiddify is an alternative, but SFA is closest to the CLI. - GUI wrappers (not needed for your workflow): GUI.for.SingBox, Hiddify, NekoBox. - Naive: the client needs a sing-box build with naive outbound support. I'll check sing-box version for the build tags after installing. If it's missing, the fallback is the standalone naive binary as a local SOCKS5 that sing-box chains to. - Cloudflare paths: no extra client app. The CDN WebSocket path is just a normal outbound. cloudflared is only needed on the VPS for the Argo tunnel. Recon of lightsail.a (read-only, nothing changed): - It runs Debian 12 with 2 vCPU, 2 GB RAM and 54 GB free. Passwordless sudo appears to work. - Caddy v2.11 already serves sosweb.org on tcp 80/443 and udp 443. It hosts a real site with a reverse proxy to a local app on 127.0.0.1:8000. That's a good decoy, so we don't need a fake one. It also means sing-box can't bind 443 directly. - Redis is on localhost only. MySQL (3306) listens on all interfaces, so check that the Lightsail firewall blocks it. Design consequences: - For Reality, sing-box takes tcp/443 and uses the local Caddy as its fallback/dest for the sosweb.org SNI. Caddy would move to a loopback port, or we use a layer4 split. - For Hysteria2, Caddy holds udp/443 for HTTP/3. I'd put hy2 on another UDP port such as 8443, or disable HTTP/3 in Caddy. - The current site must keep working through any change to Caddy. Next, I'd like to confirm whether sosweb.org is on Cloudflare, and whether the proxy is orange-clouded or DNS-only, since that decides how the WebSocket and tunnel paths work. DNS on the laptop is down for now, so I can check it from the VPS. I'll make no changes to Caddy until you confirm the port layout. Should I go ahead with the Cloudflare check? ✻ Churned for 1m 48s · done 7:49 AM ❯ go ahead and check cloudflare from the VPS Ran 1 shell command (ctrl+o to expand) ● sosweb.org resolves directly to the VPS and responds via Caddy with no cf-ray header, confirming it's not proxied through Cloudflare. Since dig isn't available on the VPS, I'll check its nameservers using DNS-over-HTTPS instead. · summary Ran 1 shell command (ctrl+o to expand) ● sosweb.org is not on Cloudflare. Its nameservers are ns-cloud-d1..d4.googledomains.com, which means Google Cloud DNS. So the domain is live and points at the VPS, but Cloudflare isn't involved. There are no r., cdn. or www. records yet. The Cloudflare paths in the plan (CDN-fronted WebSocket, Argo tunnel, Workers) need Cloudflare to answer DNS for a domain. You have three options: 1. Move sosweb.org to Cloudflare (free plan). Add the site in Cloudflare, copy the existing records, and change the nameservers at the registrar. Caddy keeps serving, but the existing A record needs to be recreated first. This enables every path in the plan and gives the strongest bypass. 2. Leave sosweb.org where it is and use a second, cheap domain on Cloudflare for the CDN and tunnel paths only. This is lower risk for your live site, but it means buying another domain. 3. Skip the Cloudflare paths for now. Build Reality, Hysteria2 and Trojan/Naive on the VPS directly. They need only DNS records here and don't depend on Cloudflare. Add Cloudflare later if the VPS IP gets blocked. My recommendation is option 3 first, then option 1 if needed. Paths 1, 2 and 3 are the core of the plan and need no changes at your registrar or DNS host. Cloudflare only matters if the VPS IP itself is blocked, and migrating a live domain is the riskiest step. Other findings: - Google Domains was sold to Squarespace, so the domain may now be managed at Squarespace, with Google Cloud DNS as the backend. I can't tell from here. Check where you log in to edit its DNS. - Caddy advertises HTTP/3 (alt-svc: h3=":443"). That's why udp/443 is taken, as I noted earlier. Which option do you want? If it's option 3, the next step is to add DNS records r.sosweb.org and a hy2 name pointing at 13.125.209.14 and then install sing-box on the VPS. I won't change anything on the VPS or in DNS until you confirm. ✻ Brewed for 19s · done 7:52 AM ❯ option 3 first, go ahead. 3. Skip the Cloudflare paths for now. Build Reality, Hysteria2 and Trojan/Naive on the VPS directly. ● Starting with the parts that can't affect the live site: install sing-box on the VPS from the official apt repo and check the build tags. Caddy and the site stay untouched. Ran 1 shell command (ctrl+o to expand) ● sing-box 1.14.2 is installed but disabled (not a failure—just not enabled yet), and it includes naive outbound support. Next I'll verify the site is unaffected and locate Caddy's certificate for sosweb.org so Hysteria2 can reuse it. · summary Ran 1 shell command (ctrl+o to expand) ● The site remains healthy, and since Caddy's certificate is only readable by the caddy user, I'll copy it to a sing-box-owned path at startup instead of loosening permissions. I'll configure VLESS+Reality (tcp/8443, camouflaged as sosweb.org) and Hysteria2 (udp/8443, with Salamander obfuscation and the reused cert) while leaving 443 for Caddy, then generate keys and write the server config. · summary Ran 1 shell command (ctrl+o to expand) ● The config validates. Starting the service and checking that it listens and the site is unaffected: Ran 1 shell command (ctrl+o to expand) ● sing-box is active on tcp+udp 8443 and the site still returns 200. Next I'll pull the client parameters into a private local file, not the repo, and check whether 8443 is reachable from here yet. Ran 1 shell command (ctrl+o to expand) ● The server side is running, but nothing can reach it yet. Lightsail has a cloud-side firewall that I can't change from here, because there is no aws CLI on this laptop. What's done on lightsail.a - sing-box 1.14.2 is installed, enabled, and listening on tcp and udp 8443. - VLESS + Reality (tcp/8443) uses sosweb.org as its camouflage target. - Hysteria2 (udp/8443) uses Salamander obfuscation and the Let's Encrypt cert, which is copied from Caddy at each service start. - sosweb.org still returns HTTP 200, and Caddy is untouched. - The generated secrets are in /etc/sing-box/client-params.env (root-only on the VPS). I copied them to a private local file in my scratchpad, outside the repo. What you need to do In the Lightsail console, open the instance's Networking tab and add two firewall rules: TCP 8443 and UDP 8443. While you're there, check that MySQL 3306 isn't open to the internet. It listens on all interfaces on the VPS. What I'll do next 1. Write the client config with a mixed inbound on 127.0.0.1:2080 only, so no system routing changes. I'll test Reality and Hysteria2 with curl --proxy and confirm they return 13.125.209.14. 2. If both work, add the TUN inbound and failover (urltest), including the hotspot proxy as another outbound. That step needs sudo on your laptop, so I'll ask before running it. 3. Decide how to add Trojan and Naive on tcp/443 behind Caddy. That needs a Caddy change, so I'll bring you that plan before touching it. Tell me when the two rules are open, and I'll continue with the client test. ✻ Churned for 1m 27s · done 7:56 AM ❯ i want client on this laptop is cli and ok to switch on/off when GFW get crazy. Ran 2 shell commands (ctrl+o to expand) ● sing-box 1.14.0-alpha.48 is already installed and supports Reality/Hysteria2, so no install needed—though I'll make sure its TUN excludes the Geph and Tailscale ranges to avoid route conflicts. Now writing the client configs and an on/off script, with secrets kept in ~/.config/sing-box/ (mode 600) outside the repo. · summary Ran 1 shell command (ctrl+o to expand) ● Both configs validate, and I left the existing config.json and test.json untouched. Next I'll check the switch script and systemd unit—note the unit isn't enabled at boot, so the proxy stays off unless manually enabled. · summary Ran 1 shell command (ctrl+o to expand) ● The client setup is ready except for two steps only you can do, because they need sudo or the cloud console. 1. Install the unit (one time). Run this in the prompt, with the leading ! so it runs in this session: ! sudo install -m 644 /tmp/claude-1000/-home-za-dev-linput/ca8d81fc-582d-4a3d- 9833-41e312a282c5/scratchpad/sing-box-client.service /etc/systemd/system/ && sudo systemctl daemon-reload It isn't enabled at boot, so nothing starts until you turn it on. 2. Open Lightsail firewall TCP 8443 and UDP 8443. Without this, neither path can connect. How you'll use it (~/.local/bin/gfw, already on your PATH): ┌──────────┬──────────────────────────────────────────────────────────────┐ │ Command │ What it does │ ├──────────┼──────────────────────────────────────────────────────────────┤ │ gfw test │ Runs a local proxy on 127.0.0.1:2080 only, with no root and │ │ │ no routing changes. Use it to check each path first. │ ├──────────┼──────────────────────────────────────────────────────────────┤ │ gfw on │ Starts the system-wide TUN. It asks for your sudo password │ │ │ and prints the exit IP, which should be 13.125.209.14. │ ├──────────┼──────────────────────────────────────────────────────────────┤ │ gfw off │ Stops it and puts you back on the plain hotspot network. │ ├──────────┼──────────────────────────────────────────────────────────────┤ │ gfw │ Shows whether the service is running and what your exit IP │ │ status │ is. │ └──────────┴──────────────────────────────────────────────────────────────┘ Design notes: - The two paths, Reality and Hysteria2, sit in a urltest group. It checks them once a minute and uses whichever works. If the GFW blocks one, it switches to the other. - The VPS IP, LAN/private ranges and Geph/Tailscale (100.64.0.0/10) bypass the tunnel, so they don't loop or conflict. - DNS goes through the tunnel (DoH to 1.1.1.1). This should also fix the laptop's current DNS timeouts while it's on. - Pointing at the VPS IP directly means the bridge works even when DNS for sosweb.org is poisoned. Once the firewall rules are open, run gfw test in one pane and curl -x socks5h://127.0.0.1:2080 https://ifconfig.me in another. Or tell me when it's open and I'll run the test myself. I haven't built Trojan/Naive yet. That needs a Caddy change on the live site, so I'll hold it until you approve the plan. Right now you have two working paths. ✻ Worked for 1m 27s · done 7:58 AM ❯ we use tcp when possible, udp is get heavy blocking, and this need confirm in usage. it's 8443 port need to be opened on lightsail.a , right? ● Yes. TCP 8443 is the one you need. The VLESS + Reality path runs on it, and it's the path I'd use first given the UDP blocking you see. UDP 8443 is optional. It carries only Hysteria2. If UDP is heavily blocked, you can skip that rule for now, and add it later only if you confirm hy2 works from your network. Hysteria2 is also the one that will break first under UDP throttling. Since you prefer TCP, I'll change the client so it doesn't pick Hysteria2 by latency. Right now the urltest could choose hy2 if it happens to be faster. I'll make Reality the fixed default and keep hy2 as a manual switch. Ran 1 shell command (ctrl+o to expand) ● Both client configs now use a selector that defaults to Reality over TCP. Hysteria2 stays defined but unused until you pick it. The trade-off is that a selector doesn't fail over by itself. If Reality gets blocked, the client won't switch to hy2 automatically. Auto-failover with Reality preferred is possible, but it takes a bit more config, and I'd only build it if you confirm that hy2 works at all from your network. What you need to do now: - Open TCP 8443 in the Lightsail firewall. - Skip UDP 8443 unless you want to test hy2 later. After that I can run gfw test and check the Reality exit IP. Tell me when the rule is in, or run the test yourself. ✻ Sautéed for 13s · done 7:58 AM ※ recap: Goal: a DPI-resistant backup bridge through lightsail.a, with a CLI client you can switch on and off. Server and client configs are ready, with Reality over TCP 8443 as the default. Next, open TCP 8443 in the Lightsail firewall so I can test it. (disable recaps in /config) ❯ 8443 port is HTTP OR SSH? OR BOTH? ● Neither. Port 8443 is its own custom port, and sing-box listens on it, not SSH or a web server. In the Lightsail console (Networking → IPv4 Firewall → Add rule): - Application: Custom (don't pick HTTP or SSH) - Protocol: TCP - Port or range: 8443 The presets are SSH (22), HTTP (80) and HTTPS (443). Those ports are already in use: SSH for login, and Caddy on 80/443 for the website. Leave them as they are. Two other points: - Reality traffic on 8443 looks like TLS (HTTPS-style) to a network observer, but the port number is custom. Some strict networks only allow 443. If 8443 turns out to be blocked on yours, the fix is moving Reality to 443 behind Caddy. That's the Caddy change I was holding back. - Add an IPv6 rule too if you use IPv6 (there's a separate IPv6 firewall tab). The client connects over IPv4, so you can skip it. ✻ Sautéed for 7s · done 8:14 AM ❯ source ip addr range, CIDR range? ● Leave it open to any source. Don't restrict it. - In Lightsail, leave "Restrict to IP address" unchecked. That means 0.0.0.0/0 for IPv4 and ::/0 for IPv6. - Your source IP changes with each hotspot or network, and it's often behind carrier NAT. A fixed CIDR would lock you out the next time you switch networks, and that would defeat the purpose of the bridge. - It's safe to leave open. Reality only accepts clients that hold the right UUID, public key and short ID. Anyone else who connects is forwarded to your real sosweb.org site, so port scanners just see a normal website. The one rule I'd restrict is SSH (22). If your Lightsail firewall allows 22 from anywhere, consider limiting it to your own IPs, or at least keep it key-only. Your SSH config already uses a key. Since your IP moves around, that's optional. Once TCP 8443 is added, tell me and I'll test the Reality path. ✻ Worked for 5s · done 8:18 AM ❯ it offer 3 preset for "source ip", 1, custom 2, ip4, 3, ip6 The 1 not accept empty/blank source. i choose 3, ip6 now. and can you test to see the 8443 port? .... ok, any ip4 and ip6 now. Ran 1 shell command (ctrl+o to expand) ● Port 8443 is open externally — a random scanner already hit it and Reality correctly rejected it — but my laptop still can't connect, so I'll check if the hotspot network is blocking that port. · summary Read 1 file, ran 1 shell command (ctrl+o to expand) ● Port 8443 is now reachable from the laptop — the earlier failures were just the firewall rule propagating. Next, I'll start the local-only Reality proxy and verify the exit IP through it. · summary Ran 1 shell command (ctrl+o to expand) ● The path failed even though my earlier raw probe to 8443 succeeded. sing-box's dial to 13.125.209.14:8443 timed out. Before guessing, I'll probe repeatedly and compare it with the server's logs: Ran 1 shell command (ctrl+o to expand) ● Background command "Compare tcp 22/443/8443 reachability from laptop" failed with exit code 255 ● Found it: traffic to the target is being routed through geph-tun via policy routing rather than directly out of the hotspot, which explains the intermittent timeouts—it's not the Lightsail firewall. Next I'll inspect the routing rules (read-only) before making any changes. · summary Ran 1 shell command (ctrl+o to expand) ● Found it — Geph's system-wide VPN is routing all traffic including my VPS tests, which explains the intermittent timeouts. I'll bind sing-box's outbound socket to the Wi-Fi interface to bypass Geph's tunnel and retest. · summary Ran 1 shell command (ctrl+o to expand) ● Binding directly to Wi-Fi still times out, so it's not Geph-specific. I'll test the VPS over the hotspot on each port to see if 8443 is blocked specifically or the whole IP is. · summary Ran 1 shell command (ctrl+o to expand) ● All ports fail over Wi-Fi to the VPS, confirming it's not an 8443-specific issue but that the hotspot blocks direct TCP entirely and only works through its proxy. I'll test going through that proxy directly next. · summary Ran 1 shell command (ctrl+o to expand) ● TCP 8443/Reality works through the hotspot's HTTP proxy, but port 9910 is HTTP-only (not SOCKS5), so UDP-based Hysteria2 can't work on this network. I'll rewire the client to route Reality through the hotspot's HTTP proxy and drop hy2 from the selector for now. · summary Ran 1 shell command (ctrl+o to expand) ● The Reality outbound now fails to reach the hotspot proxy (10.128.97.214:9910) when bound to Wi-Fi, despite curl reaching it moments ago. I'll check how the laptop is actually routing to the proxy. · summary Ran 1 shell command (ctrl+o to expand) ● I can't complete an end-to-end client test yet, and I'd rather tell you why than keep guessing. What I know: - The server side works. sing-box on lightsail.a is listening on tcp 8443, and Reality is answering. A random internet scanner was rejected, and a curl through your hotspot proxy got Reality's TLS reply. - Geph is the problem. It runs system-wide (ip rule 120 sends your user's traffic into geph-tun). So every test I run goes through Geph, whose connection to the VPS is flaky. - Going around Geph also fails. If I bind to Wi-Fi to bypass Geph, the phone doesn't answer: ping to 10.128.97.214 gets 100% loss, and connections to the proxy time out. The proxy only worked through the default path. - I got part of this wrong earlier. I called 10.128.97.214 "the hotspot gateway" you could reach directly. I can't confirm that from the evidence, so ignore that framing. I can't resolve this without your input, because pausing Geph could cut this session, so I won't do it. Which would you like? 1. Test on the phone first. Import the Reality outbound into SFA or Hiddify on the phone, which doesn't have this Geph conflict. It's a fast, low-risk check that the VPS side is solid. I can give you the share link. 2. Pause Geph for one minute at a moment you choose (sudo systemctl stop geph5 or via the Geph app), while I run gfw test. You may lose this session's connection briefly. 3. Tell me how Geph is set up. If its upstream is the phone's proxy, the right design is probably to run the bridge as a Geph alternative, not a layer under it. State of things: the VPS has sing-box running (Caddy and the site untouched). On the laptop I've only added ~/.config/sing-box/client*.json and ~/.local/bin/gfw. The systemd unit isn't installed, and nothing is running now. Remember to open the Lightsail rule for TCP 8443 only if it isn't already (it is open). ✻ Churned for 5m 55s · done 8:29 AM ※ recap: We're building a TCP-first bypass bridge to your VPS lightsail.a, and the server side (Reality on 8443) is running. The client test is blocked because Geph captures this laptop's traffic. Next: tell me which of the three options you want, starting with a phone test. (disable recaps in /config) ❯ give me the command to test sing-box, i close geph to have a test, the connection is gonna lost during tests. ● Geph being closed will likely drop this session, so I'm putting everything in one script. You run it, and it saves the results to a file I can read when we reconnect. It tests both ways to reach the VPS: A) Reality directly over Wi-Fi, B) Reality chained through the hotspot HTTP proxy. Ran 1 shell command (ctrl+o to expand) ● The test script is ready. Run it in a separate terminal after closing Geph: gfw-diag It takes about 1 minute, and no sudo is needed. It prints the results and saves them to ~/gfw-diag.txt. What it checks: - Raw TCP to the VPS on ports 22, 443 and 8443. - Whether the hotspot HTTP proxy at 10.128.97.214:9910 works. - Test A: Reality direct over Wi-Fi, on local port 2081. - Test B: Reality chained through the hotspot proxy, on local port 2082. How to read it: success is exit ip: 13.125.209.14. If A works, you can run the bridge without the proxy. If only B works, the phone only forwards through its proxy. If both fail, the problem is on the network path, not the VPS config. After the test: 1. Start Geph again, or reconnect however you normally do. 2. Say "done" here. I'll read ~/gfw-diag.txt and tell you what it means. If the session doesn't come back, you can also paste the contents of ~/gfw-diag.txt into a new one. ✻ Brewed for 23s · done 8:37 AM ❯ /export /tmp/sing ⎿ Conversation exported to: /tmp/sing.txt ※ recap: We're building a Reality bridge through your VPS (lightsail.a) as a backup to Geph, and the server side is running. The next step is for you to close Geph, run `gfw-diag`, restart Geph, then tell me "done". (disable recaps in /config) ❯ hi, diag as: za@zaasus:~ $ gfw-diag == Sun Oct 4 08:44:24 AM GMT 2026 == wlo1 UP 10.128.97.204/24 240e:47d:c10:bfd2:563d:f0ff:e948:d983/64 240e:47d:c10:bfd2:4e81:bee0:73de:ec3a/64 fe80::a1ad:4662:2bda:82a/64 default via 10.128.97.214 dev wlo1 proto dhcp src 10.128.97.204 metric 20600 10.12.88.0/24 dev lxdbr0 proto kernel scope link src 10.12.88.1 10.128.97.0/24 dev wlo1 proto kernel scope link src 10.128.97.204 metric 600 geph rule count: 0 == raw direct TCP to VPS (wlo1 default route) :22 connect=0.000000s :443 connect=0.000000s :8443 connect=0.000000s == raw via hotspot HTTP proxy 10.128.97.214:9910 sosweb.org via proxy: http=200 1.268481s == sing-box test A-direct (local :2081) exit ip: 13.125.209.14 sosweb.org: http=200 1.761994s == sing-box test B-viaproxy (local :2082) exit ip: 13.125.209.14 sosweb.org: http=200 1.584000s == done. Expected success: exit ip = 13.125.209.14 (2026-10-04 08:44:37) za@zaasus:~ $ ● Both tests pass with Geph off: Test A (direct) and Test B (via the hotspot proxy) both exit at 13.125.209.14 and fetch sosweb.org with HTTP 200. So the Reality server works, and the earlier timeouts came from Geph's routing. The raw curl probes showing connect=0.000000s are a curl artifact. Test A reached the same port fine, so ignore those lines. That also corrects my "proxy-only hotspot" theory. The phone forwards plain TCP, so the bridge doesn't need the proxy. I'll now rebuild the full client config: Reality direct as the main path, Reality-via-hotspot-proxy as a TCP fallback, and automatic failover between them. Ran 1 shell command (ctrl+o to expand) ● The full client config is updated and validated. It has a urltest group named proxy with two TCP paths: reality (direct) and reality-hotspot (via the phone's HTTP proxy). Hysteria2 stays defined but unused, since you prefer TCP and UDP gets blocked. I haven't run the TUN yet. To finish setup, two steps need your sudo. Run these with the ! prefix: 1. Install the unit (one time). It isn't enabled at boot. ! sudo install -m 644 /tmp/claude-1000/-home-za-dev-linput/ca8d81fc-582d-4a3d- 9833-41e312a282c5/scratchpad/sing-box-client.service /etc/systemd/system/ && sudo systemctl daemon-reload 2. Try it, with Geph still off: gfw on # starts the system-wide TUN, prints the exit IP (should be 13.125.209.14) gfw status gfw off # back to normal Two cautions: - Run the bridge or Geph, not both at once. Geph's routing rule (priority 120) takes traffic before sing-box's TUN rules (priority 9000), so with both on, Geph wins and the bridge sits idle. I haven't set it up to override Geph, so I'd treat the bridge as the alternative to Geph, switched on when it is blocked. - Switching on a system-wide TUN can break SSH or your session if something goes wrong. Since gfw off is a single command that you can run from another terminal, that's low risk. Keep that terminal open when you try it. Once gfw on shows the VPS exit IP, tell me. After that, the remaining optional work is Trojan/Naive on 443 behind Caddy, which I'm still holding until you approve a Caddy change. ✻ Cogitated for 21s · done 8:45 AM ❯ (2026-10-04 08:46:55) za@zaasus:/my/md $ sudo install -m 644 /tmp/claude-1000/-home-za-dev-linput/ca8d81fc-582d-4a3d-9 833-41e312a282c5/scratchpad/sing-box-client.service /etc/systemd/system/ && sudo systemctl daemon-reload [sudo: authenticate] Password: (2026-10-04 08:46:55) za@zaasus:/my/md $ gfw on active exit ip: curl: (7) Failed to connect to ifconfig.me port 443 via 127.0.0.1 after 0 ms: Could not connect to server unreachable ● The service reports active, but the exit-IP check failed on 127.0.0.1, not the VPS. That points to a proxy environment variable in your shell, not to the bridge. Checking that and the service log: Ran 1 shell command (ctrl+o to expand) ● The bridge itself is fine—tun0 is up and the service is active—but my gfw status check was failing because curl picked up a stale local proxy variable instead of testing the TUN. I'll fix the check to bypass proxy variables and test the TUN directly. · summary Ran 1 shell command (ctrl+o to expand) ● The bridge works, system-wide. With the TUN on, and with proxy variables ignored: - The exit IP is 13.125.209.14. - sosweb.org returns HTTP 200 in about 1.5 s. - DNS resolves through the tunnel. That fixes the earlier DNS timeouts. - SSH to lightsail.a works through it. The earlier exit ip: curl: (7) ... via 127.0.0.1 was a bug in my status check. Your terminal has a proxy variable pointing at a local proxy (likely Geph's), and the check followed it instead of testing the TUN. I fixed gfw status to ignore those variables. What you have now ┌───────────┬─────────────────────────────────────────────────────────────┐ │ Command │ Effect │ ├───────────┼─────────────────────────────────────────────────────────────┤ │ gfw on │ Starts the bridge (system-wide TUN). It asks for sudo. │ ├───────────┼─────────────────────────────────────────────────────────────┤ │ gfw off │ Stops it and returns to the normal network. │ ├───────────┼─────────────────────────────────────────────────────────────┤ │ gfw │ Shows whether it's running and your exit IP. │ │ status │ │ ├───────────┼─────────────────────────────────────────────────────────────┤ │ gfw test │ A local-only proxy on 127.0.0.1:2080, with no root and no │ │ │ route changes. │ └───────────┴─────────────────────────────────────────────────────────────┘ - The bridge runs Reality over TCP/8443 with automatic failover between the direct path and the hotspot-proxy path. Hysteria2 is defined but unused. - It doesn't start at boot, so it's off unless you switch it on. - Run it instead of Geph, not alongside it. Geph's routing rule overrides sing-box's. Two cleanup items - Your shell still has proxy variables (https_proxy and similar). With the TUN on, they're redundant, and they point at a local proxy that's no longer there. Tools that read them, like curl or Claude Code, may fail until you unset them or restart Geph. That was how my status check broke. - The service is running now. Run gfw off when you want to go back. Optional next steps: 1. Add Trojan or Naive on tcp/443 behind Caddy, as a second TCP path. That needs a Caddy change on the live site, so I'd write the plan and wait for your approval. 2. Back up the config. Copying ~/.config/sing-box/ and /etc/sing-box/ somewhere safe would let you rebuild the setup. I'd keep it out of the repo, since it holds the secrets. Which do you want, or is this enough for now? ✻ Crunched for 33s · done 8:48 AM ❯ how to clear all proxy for cmd? ● To clear them in the current shell: unset http_proxy https_proxy all_proxy ftp_proxy no_proxy \ HTTP_PROXY HTTPS_PROXY ALL_PROXY FTP_PROXY NO_PROXY To confirm nothing is left: env | grep -i proxy # should print nothing Other ways: - One command only: env -u https_proxy -u http_proxy -u all_proxy -u HTTPS_PROXY -u HTTP_PROXY -u ALL_PROXY curl .... For curl alone, curl --noproxy '*' ... does the same. - Make it permanent: the variables are being set somewhere at login. Find where with grep -rniE "proxy" ~/.bashrc ~/.profile ~/.bash_profile /etc/environment /etc/profile.d/ 2>/dev/null, then comment those lines out. In tmux, also run tmux set-environment -gu https_proxy (repeat for each variable), because tmux keeps its own copy and new panes inherit it. - Apps with their own settings: apt reads /etc/apt/apt.conf.d/*proxy*, git reads git config --global --get-regexp proxy, and pip and npm have their own configs. The unset above doesn't touch those. Only unset them while the bridge is on, or after Geph is gone. If Geph or the hotspot proxy is your only way out when the bridge is off, clearing the variables will break things. A quick way to restore the old state is to re-source whatever sets them, or open a new terminal. ✻ Baked for 5s · done 8:51 AM ❯ $ gfw off bridge OFF (direct network) (2026-10-04 08:49:49) za@zaasus:/my/md $ env -u https_proxy -u http_proxy -u all_proxy -u HTTPS_PROXY -u HTTP_PROXY -u ALL_PROXY gfw on active exit ip: 13.125.209.14 (2026-10-04 08:49:49) za@zaasus:/my/md $ ● That's the result we wanted: gfw on shows the exit IP 13.125.209.14 and gfw off returns to direct. The bridge now switches on and off from the command line. The env -u ... wasn't needed this time. I changed gfw status earlier to ignore proxy variables, so gfw on gives the same result in any shell. Clearing the variables only matters for other tools you run while the bridge is on. Where things stand: - VPS (lightsail.a): sing-box serves VLESS + Reality on tcp/8443 and Hysteria2 on udp/8443. Hysteria2 is unused for now, and the Lightsail firewall only needs the TCP rule. sosweb.org on Caddy is untouched. - Laptop: gfw on|off|status|test. Failover between the direct and hotspot-proxy paths is automatic. It doesn't start at boot. - Not built: Trojan/Naive on 443, and the Cloudflare paths (CDN, Argo, Workers). The domain isn't on Cloudflare, and you chose to skip those for now. Worth doing before you rely on it: 1. Test it from a different network or SIM, not just this hotspot. The real check is whether tcp/8443 and the Reality handshake survive the filtering you see. If 8443 gets blocked, moving Reality to 443 is the fix, and that's the Caddy change I'm holding. 2. Back up the secrets. ~/.config/sing-box/ on the laptop and /etc/sing-box/ on the VPS hold the keys. Without a copy, losing either machine means regenerating everything and updating each client. 3. Close the MySQL exposure. Port 3306 on the VPS listens on all interfaces. Confirm Lightsail isn't allowing it from the internet. Which should I take first: the 443 plan for stronger stealth, a backup script, or the MySQL check? ✻ Worked for 7s · done 8:52 AM ❯ i want to check if geph is still stay in background what good way to disconnect geph? geph5 disconnect # is this enough? za@zaasus:/my/md $ ps aux |grep geph root 8944 0.0 0.0 49052 4152 ? Ssl Sep24 11:04 /usr/local/bin/geph5 manager geph5-d+ 9030 0.0 0.0 75380 11080 ? Sl Sep24 0:02 /usr/local/bin/geph5-client --config /var/lib/geph/ za 3948689 0.0 0.0 12432 2628 pts/2 S+ 08:53 0:00 grep --color=auto geph (2026-10-04 08:53:29) za@zaasus:/my/md $ ● Your ps output already suggests Geph isn't tunneling. I'll verify with the routing state, which is the real test: Ran 2 shell commands (ctrl+o to expand) ● Geph is already disconnected, and geph5 disconnect is the right command. Nothing is tunneling now: - There is no geph-tun interface. - There are no Geph policy rules (the rule 120 and table 26469 that were capturing your traffic are gone). - No Geph process is listening on a port. What the leftover processes are: - geph5 manager (root) is the supervisor daemon, run by the geph-manager.service systemd unit. It stays up across logins and reboots and waits for the GUI or CLI to tell it to connect. It does nothing to your traffic while the tunnel is down. - geph5-client --config .../query-config... is a helper the manager keeps for info queries (such as exit lists). It isn't the tunnel. The tunnel client used a child-config. file earlier, and that process is gone. Commands, from lightest to heaviest: 1. geph5 disconnect tears the tunnel down. This is enough for switching to the bridge. geph5 status confirms the state. 2. geph5 connect brings it back. Use geph5 reconnect to restart it without a leak window. 3. sudo systemctl stop geph-manager stops the supervisor too, so no Geph process remains. Use it only if you want a fully clean slate. 4. sudo geph5 unregister-manager removes the background registration, so it won't run at boot. You'd need register-manager to undo it. Only do this if you never want Geph auto-started again. Also useful: geph5 vpn shows or sets full-tunnel mode. If that were on, it would explain why Geph captured all traffic earlier, and turning it off would let Geph and the bridge coexist as separate proxies. I haven't changed it. Do you want me to look at its current setting? ✻ Crunched for 16s · done 8:54 AM ❯ now the laptop is through vps, except the resecure channel is still going through hotspot. ● Let me check which processes still talk to the hotspot proxy, since I'm guessing at what "resecure channel" means: Ran 1 shell command (ctrl+o to expand) ● It's two apps that are set to use the hotspot proxy directly, so they bypass the bridge: - Firefox (pid 3924610) has about 9 open connections to 10.128.97.214:9910. - Claude Code, this CLI (pid 3902764), is also connected to it. This is expected. Both apps connect to the proxy at 10.128.97.214, which is a private LAN address. My bridge config sends private addresses direct, so those connections go straight to the phone and skip the tunnel. Their traffic then leaves via the phone's carrier, not the VPS. To move them onto the bridge, remove the proxy setting from each app: 1. Firefox: Settings → Network Settings → select No proxy. If you want it to follow the system, pick "Use system proxy settings". 2. Claude Code: the proxy is in its environment and fixed at start. Restart it with the variables cleared: env -u https_proxy -u http_proxy -u all_proxy -u HTTPS_PROXY -u HTTP_PROXY -u ALL_PROXY claude --resume --resume keeps this conversation. 3. tmux: its server env has https_proxy=http://127.0.0.1:9910, which is Geph's old local proxy and now dead. Every new pane inherits it. Clear it with: for v in http_proxy https_proxy all_proxy HTTP_PROXY HTTPS_PROXY ALL_PROXY; do tmux set-environment -gu $v; done Existing panes keep their own copy until you unset the variables there or open new ones. Don't remove the proxy settings until you're sure the bridge works for you. Right now the proxy path is also your fallback. When gfw off is set, you still need it if Geph is off. I haven't changed anything on your machine for this. I can write the clean-up as a small script, gfw-env, that unsets the variables and restarts the right panes, if you'd like. ✻ Cogitated for 17s · done 8:57 AM ❯ write the teach me how we setup the sing-box and what's gfw and gfw-diag ? Listed 1 directory (ctrl+o to expand) ● Write(/my/md/sing-box-bridge.md) ⎿  Wrote 120 lines to ../../../../my/md/sing-box-bridge.md 1 # sing-box bridge: how it was set up, and what `gfw` / `gfw-diag ` are 3 Date built: 2026-10-04. Laptop: zaasus. VPS: `lightsail.a` (13.1 25.209.14, Debian 12, Seoul). Domain: sosweb.org. 4 No secrets are in this file. They live in `~/.config/sing-box/` 5 6 ## 1. The idea in one picture 7 9 apps on laptop 10 | … +156 lines (ctrl+o to expand) ● I wrote it to /my/md/sing-box-bridge.md, next to your other notes. It has no secrets in it. In short: - What gfw is. It's just my name for the on/off switch script (~/.local/bin/gfw), not a tool that touches the real Great Firewall. - gfw on and gfw off start and stop the sing-box TUN with systemctl. - gfw status shows the exit IP. - gfw test runs a local-only proxy with no root. - What gfw-diag is. It's a one-shot test script. Run it with Geph off. It probes the VPS ports, the hotspot proxy, and two sing-box tests: Test A (Reality direct) and Test B (Reality through the hotspot proxy). It saves the result to ~/gfw-diag.txt. If both tests show 13.125.209.14, the VPS side is fine and any problem is on the network path. - How sing-box is set up. - On the VPS, sing-box listens on port 8443 with VLESS + Reality over TCP, plus Hysteria2 over UDP (unused). Caddy keeps 443. - On the laptop, a TUN captures all traffic and sends it to the VPS as TLS-looking traffic. Reality uses your real sosweb.org site as camouflage. The doc also covers the terms (VLESS, Reality, TUN, DPI), a diagram, the build steps in order, the gotchas we hit (Geph's routing rule, Lightsail's separate firewall, proxy env vars), and recovery commands. I haven't committed it. /my/md isn't the linput repo, so your usual rule about committing za*.md files doesn't apply. Tell me if that folder has its own repo you want it in. ✻ Baked for 32s · done 8:59 AM ❯ as the evil gfw is so evil, i'd push fast on all my projects, they're can shutdown all networks in the future. ● That's a sound instinct. A cut-off could come with little warning, and anything that isn't pushed or backed up off this machine would be at risk. I'll survey first, read-only, and won't push anything until you say so. Ran 1 shell command (ctrl+o to expand) ● Here is where each repo stands. Nothing has been pushed or changed. ┌─────────────────────────┬────────────────┬──────────────────────────────┐ │ Repo │ State │ What pushing needs │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ │ 3 commits │ push, after reviewing the │ │ mapai │ unpushed, 1 │ dirty file │ │ │ dirty file │ │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ │ 2 commits │ review, commit, push. It │ │ sos-relay │ unpushed, 38 │ backs sosweb.org, so check │ │ │ dirty files │ it for secrets first. │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ │ │ create a remote first, then │ │ maskai │ no remote, 23 │ commit and push. Biggest │ │ │ dirty │ risk: it exists only on this │ │ │ │ laptop. │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ │ │ review first. That many │ │ media-scripts │ 62 dirty files │ changes may include large or │ │ │ │ generated files. │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ screendemo │ 7 dirty │ commit and push │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ vim-bridge-chrome │ 3 dirty │ commit and push │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ classroom, localllm, │ 1-2 dirty each │ small commits and push │ │ orchestration, wordfile │ │ │ ├─────────────────────────┼────────────────┼──────────────────────────────┤ │ linput, basicsMar23 │ clean and in │ nothing to do │ │ │ sync │ │ └─────────────────────────┴────────────────┴──────────────────────────────┘ Two more points: - /my/md (your notes) isn't in any git repo I found, so sing-box-bridge.md and the rest exist only here. If you want them kept, they'd need a repo with a remote. - I don't know where the remotes are. If any are on GitHub, check that they're reachable from where you'd push during a cut-off. This bridge helps now, but it's what you'd rely on later. I'd do it in this order: 1. maskai: it has no remote. 2. Unpushed commits in mapai and sos-relay. This is safe and quick. 3. The dirty trees, one repo at a time. I'll show you each diff summary first, so no junk or secrets get committed. I'll also add .gitignore entries where needed. 4. /my/md as its own repo, if you want it. Pushing sends your code to an outside service, so tell me how far to go. Should I start with step 2 (push mapai and sos-relay's existing commits)? Or tell me which remote and account to use for maskai and /my/md, and I'll set those up first. ✻ Churned for 17s · done 9:01 AM ※ recap: Goal: a working VPS bridge via sing-box, which now runs, with `gfw on/off` as the switch. Current task is pushing your projects to remotes before any shutdown. Next: say whether I should push mapai and sos-relay's unpushed commits first. # summary # Transparent proxy via tun2socks: today's chat (2026-10-05) ## Q1: What does this command do? ``` sudo ip tuntap add dev tun0 mode tun sudo ip addr add 198.18.0.1/15 dev tun0 sudo ip link set tun0 up sudo tun2socks -device tun0 -proxy http://10.128.97.214:9910 # or socks5:// # keep the proxy itself off the tunnel, then send the rest through tun0 sudo ip route add 10.128.97.214 via dev sudo ip route add default dev tun0 metric 1 ``` ### A1 It makes all of the machine's traffic go through a proxy, even from programs that don't support proxies. It works at the network layer instead of the application layer. 1. `ip tuntap add dev tun0 mode tun`: creates a virtual network interface. Packets sent to it go to a userspace program, not hardware. 2. `ip addr add 198.18.0.1/15 dev tun0`: gives it an address in 198.18.0.0/15, a range reserved for benchmarking, so it won't collide with real networks. 3. `ip link set tun0 up`: turns the interface on. 4. `tun2socks -device tun0 -proxy http://10.128.97.214:9910`: reads raw IP packets from `tun0`, reassembles the TCP connections, and re-opens each one through the proxy (HTTP CONNECT, or SOCKS5 with `socks5://`). 5. `ip route add 10.128.97.214 via dev `: a specific route so traffic to the proxy itself leaves via the real Wi-Fi interface. Without it the proxy's own connection would be routed into `tun0` and tun2socks would feed its own output back to itself (routing loop). 6. `ip route add default dev tun0 metric 1`: makes `tun0` the default route, so everything else goes through the tunnel. The proxy exception must be added first. Net effect: an app sends a packet to e.g. 93.184.216.34:443. The kernel routes it into `tun0`, tun2socks picks it up and asks the proxy to connect there, and the proxy relays it. The app never knows a proxy exists, so programs that ignore `HTTP_PROXY` are covered too. Caveats: - HTTP CONNECT proxies only carry TCP. UDP (including normal DNS) won't pass. DNS fails or leaks unless you use SOCKS5 with UDP associate or a local resolver. - Forgetting the proxy-exclusion route gives a routing loop. - Needs root. `` and `` are placeholders; get them from `ip route`. Undo: ``` sudo ip route del default dev tun0 sudo ip link del tun0 ``` Deleting `tun0` also removes its routes. ## Q2: What's the package name for tun2socks? Also, DNS is always polluted by the GFW, so an HTTP proxy is weak for bypassing. ### A2 Package: not in the standard apt repos. Two different programs share the name: - **xjasonlyu/tun2socks** (Go): the one my flags (`-device`, `-proxy`) belong to. Supports HTTP and SOCKS5. Download from the GitHub releases page (`tun2socks-linux-amd64.zip`) or `go install github.com/xjasonlyu/tun2socks/v2@latest`. Then `chmod +x` and move to `/usr/local/bin/tun2socks`. - **badvpn-tun2socks**: in apt as `badvpn`. Older, different flags (`--tundev`, `--socks-server-addr`), SOCKS5 only. The commands above would not work as written. DNS: correct. Local DNS is poisoned before the proxy sees the request, because the app resolves the name locally and then sends the resulting IP over the tunnel. Options, simplest to most robust: 1. **Resolve over the tunnel.** Point `/etc/resolv.conf` at an upstream resolver (8.8.8.8 / 1.1.1.1), or run a local forwarder (`dnscrypt-proxy`, `unbound`) doing DNS-over-TCP or DoH. If the resolver IP goes through `tun0`, the query exits at the proxy and is not poisoned. DoH to an IP address avoids another local lookup. 2. **SOCKS5 with UDP associate.** Then plain DNS to 8.8.8.8 goes through the tunnel as-is. 3. **Fake-ip DNS tools** (sing-box, mihomo/Clash.Meta TUN mode). They hijack DNS queries and return a placeholder IP. The real domain goes to the proxy, which resolves it remotely, so local poisoning is irrelevant. The standard fix, but more configuration than tun2socks. With an HTTP-only proxy, use option 1 or 3. ## Q3: The hotspot proxy is http://hotspot:9910 and socks5://hotspot:9909. Connecting to it means my Internet connection may be shut down. This could be my last way back to the Internet. :( ### A3 Don't worry, it is very hard to lock yourself out. `ip route`, `ip tuntap` and `ip addr` changes live only in memory. A reboot, or `sudo ip link del tun0`, restores the network exactly. None of these commands touch the Wi-Fi association with the hotspot. Safe order, with no routing change until the proxy is proven: **1. Save the current state** ``` ip route > ~/routes.before cat /etc/resolv.conf > ~/resolv.before ``` **2. Test the proxies alone, no tun** ``` curl -x socks5h://hotspot:9909 https://ifconfig.me curl -x http://hotspot:9910 https://ifconfig.me ``` `socks5h` makes the proxy resolve the hostname, so poisoned local DNS doesn't matter. If either prints an IP, the proxy works. A browser or `proxychains4` may be enough, with no TUN needed. Prefer the SOCKS5 port (9909): better protocol, may support UDP. **3. If using the TUN, test one destination first** ``` sudo ip route add 1.1.1.1 dev tun0 curl --interface tun0 https://1.1.1.1 ``` **4. Switch the default route with an automatic rollback** ``` sudo bash -c 'ip route add default dev tun0 metric 1; sleep 90; ip route del default dev tun0' ``` If something breaks, do nothing: after 90 seconds the route is removed and you're back online. If it works, run `ip route add default dev tun0 metric 1` yourself afterwards. Notes: - The proxy is on the same hotspot network, so a route to it probably exists via the connected subnet. The explicit exception route is probably redundant but harmless, and protects against a routing loop. - Keep one terminal with the undo command already typed: `sudo ip link del tun0`. - If `hotspot` is a hostname, make sure it resolves. If not, use its IP address in every command, since name resolution is the first thing that could fail. ## Q4: How do I /copy the last chat together with my question? ### A4 `/copy` only copies Claude's last response, not the question. Options: select and copy from the terminal (Ctrl+Shift+C); `/export` if your version has it; read the JSONL transcript under `~/.claude/projects/-home-za-dev-linput/`; or ask Claude to write the conversation to a file (this file). ## Rescue cheat sheet ``` sudo ip route del default dev tun0 # drop the tunnel default route sudo ip link del tun0 # remove the tun device and its routes ip route # compare with ~/routes.before sudo reboot # all of these changes are non-persistent ```