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[Solved with Gluetun] Tailscale ExitNode with VPN (lemmy.world)
submitted 2 years ago* (last edited 2 years ago) by LunchEnjoyer@lemmy.world to c/linux@lemmy.ml
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I would really really really like to have one device on my tailnet as the exitnode for all other devices on the tailnet. However, most VPNs make this really difficult. Is there any way to do this? I've read it's possible with split-tunnelling, but ProtonVPN (which I use) doesn't support that. I just installed Alpine Linux on my RPI 4b. And would like to use this as my exit node. Does anyone have any tips for how this could be done?

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[–] zzzzzz@lemmy.ml 2 points 2 years ago (3 children)

I have solved this problem! The trick is to use two Docker containers:

  1. Gluetun (https://github.com/qdm12/gluetun): set this up to connect to your VPN.
  2. Tailscale (https://tailscale.com/kb/1282/docker/): set this to use the Gluetun network.

Here is an example docker-compose.yml:

version: "3"
services:
  gluetun:
    image: qmcgaw/gluetun
    container_name: gluetun
    # line above must be uncommented to allow external containers to connect.
    # See https://github.com/qdm12/gluetun-wiki/blob/main/setup/connect-a-container-to-gluetun.md#external-container-to-gluetun
    restart: unless-stopped
    cap_add:
      - NET_ADMIN
    devices:
      - /dev/net/tun:/dev/net/tun
    volumes:
      - ./gluetun:/gluetun
    environment:
      - VPN_SERVICE_PROVIDER=airvpn
      - VPN_TYPE=wireguard
      - WIREGUARD_PRIVATE_KEY=xxx
      - WIREGUARD_PRESHARED_KEY=xxx
      - WIREGUARD_ADDRESSES=xxx
      - WIREGUARD_MTU=1320
      - SERVER_COUNTRIES=United States
      # See https://github.com/qdm12/gluetun-wiki/tree/main/setup#setup
      # Timezone for accurate log times
      - TZ=America/New_York
      # Server list updater
      # See https://github.com/qdm12/gluetun-wiki/blob/main/setup/servers.md#update-the-vpn-servers-list
      - UPDATER_PERIOD=24h

  tailscale:
    container_name: tailscale
    cap_add:
      - NET_ADMIN
      - NET_RAW
    volumes:
      - ./tailscale/var/lib:/var/lib
      - ./tailscale/state:/state
      - /dev/net/tun:/dev/net/tun
    network_mode: "service:gluetun"
    restart: unless-stopped
    environment:
      - TS_HOSTNAME=airvpn-exit-node
      - TS_AUTHKEY=xxxxxxxx
      - TS_EXTRA_ARGS=--login-server=https://example.com --advertise-exit-node
      - TS_NO_LOGS_NO_SUPPORT=true
      - TS_STATE_DIR=/state
    image: tailscale/tailscale
[–] LunchEnjoyer@lemmy.world 1 points 2 years ago (1 children)

Wow! You know what, I was just thinking about using Gleutun for this enefore I went to bed last night, and then I wake up to this gem of a message!! 😅 Well done sir, I'll be cooking this up ASAP!

[–] zzzzzz@lemmy.ml 0 points 2 years ago (1 children)

Let me know how it works out for you! I'm happy to be able to share this. I was very pleased with myself but had no one to tell haha. I actually have several copies of this set up with each Gluetun instance connected to different countries. Then, changing country is as easy as changing your tailnet exit node!

[–] LunchEnjoyer@lemmy.world 0 points 2 years ago (1 children)

Hell yeah, got that working in an instant! Appreciate the pointer, have a great weekend! :)

[–] Blxter@lemmy.zip 1 points 10 months ago

Hey, did you have to do anything besides the above config in order to have this work well. It works but is extremely slow should I try with a different wireguard IP as I reused the one I use for qbit?

[–] qaz@lemmy.world 1 points 10 months ago* (last edited 10 months ago) (1 children)

I get 0.8mbps when using this as exit node compared to 100+mpbs when using an exit node on the same server installed as system package. Have you noticed any performance issues?

[–] Blxter@lemmy.zip 1 points 10 months ago (2 children)

I also have an extremely slow connection when using the exit node. Did you figure anything out to work better?

[–] qaz@lemmy.world 2 points 10 months ago

No I haven't

[–] Positivity24@lemmy.world 1 points 9 months ago* (last edited 9 months ago)

Try adding "privileged: true" under tailscale service to see if that improves speed. Also, your vpn provider needs to support port forwarding to prevent relayed connection, else add sysctl parameters for ipv4 and ipv6 in both tailscale and wireguard

[–] RandomlyRight@sh.itjust.works 1 points 1 year ago* (last edited 1 year ago)

For anyone trying this, make sure you do not have "- TS_USERSPACE=false" in your yaml from previous experimentation. After removing this, it works for me too.

In the documentation they say to add sysctl entries, it is possible in docker compose like so:

tailscale:
    sysctls:
      - net.ipv4.ip_forward=1
      - net.ipv6.conf.all.forwarding=1

But it does not seem to make a difference for me. Does anyone know why these would not be required in this specific setup?

[–] robotfriend@lemmy.ca 0 points 2 years ago* (last edited 2 years ago) (1 children)

I've been trying to accomplish the exact same thing. In the same vein I've also been trying to setup a tailscale exit node with mitmproxy so that i can inspect mobile app traffic without having to fiddle with proxy configs on my phone each time. In relation to that i found this - https://www.aapelivuorinen.com/blog/2022/09/12/transparent-mitmproxy-tailscale-vm/

Let me know how you get on as I'm super keen on having both a VPN and mitmproxy setup as exit nodes.

[–] LunchEnjoyer@lemmy.world 0 points 2 years ago

A solution was posted in later comments, did you see?