How to specify port number in compose file that is behind vpn container

Decronym Bot , 9 months ago (edited 9 months ago)

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

Fewer Letters	More Letters
HTTP	Hypertext Transfer Protocol, the Web
HTTPS	HTTP over SSL
IP	Internet Protocol
SSL	Secure Sockets Layer, for transparent encryption
VPN	Virtual Private Network

---

4 acronyms in this thread; the most compressed thread commented on today has 10 acronyms.

[Thread #213 for this sub, first seen 12th Oct 2023, 16:55] [FAQ] [Full list] [Contact] [Source code]

Appoxo , 9 months ago

You could join two different networks

And bind the port to that.

Example:

<span style="color:#323232;">    ports: 
</span><span style="color:#323232;">       - 8880:8880 #HTTP port #optional 
</span><span style="color:#323232;">       - 8443:8443 #HTTPS port 
</span><span style="color:#323232;">       - 3478:3478/udp 
</span><span style="color:#323232;">       - 10001:10001/udp 
</span><span style="color:#323232;">       - 8080:8080 
</span><span style="color:#323232;">       - "10.0.0.253:1900:1900/udp" #optional 
</span><span style="color:#323232;">       - 8843:8843 #optional 
</span><span style="color:#323232;">       - 6789:6789 #optional 
</span><span style="color:#323232;">       - 5514:5514/udp #optional 
</span><span style="color:#323232;">     networks: 
</span><span style="color:#323232;">       service: 
</span><span style="color:#323232;">       net: 
</span><span style="color:#323232;">         ipv4_address: 10.0.0.253
</span>

In that case I binded the container to the service network but needed a static IP reachable by outside devices.
So I created a macvlan adapter, binded the port 1900 to that adress and all was fine.
Should probably work for your use case.

webnet , 9 months ago

qBittorrent has an option to define the WEBUI_PORT. If you want to access it on say, port 8585, set this environment variable to WEBUI_PORT=8585. Then in gluetun, continue to reference it as you do above. Hope this helps. registry.hub.docker.com/r/…/qbittorrent

<span style="color:#323232;">  qbittorrent:  
</span><span style="color:#323232;">    container_name: qbittorrent  
</span><span style="color:#323232;">    image: linuxserver/qbittorrent:latest
</span><span style="color:#323232;">    environment:
</span><span style="color:#323232;">      - WEBUI_PORT=8585
</span><span style="color:#323232;">    restart: unless-stopped
</span><span style="color:#323232;">    network_mode: container:vpn  
</span><span style="color:#323232;">    volumes:  
</span><span style="color:#323232;">     - /docker/appdata/qbitorrent:/config  
</span>

Fjor OP , 9 months ago

Ah thanks! That solves one of the services at least. Merciii <3

SheeEttin , 9 months ago

docs.docker.com/compose/…/compose-file-v3/#ports

thepianistfroggollum , 9 months ago

Just use a different port number. I’m not sure why it’s necessary to use the same one since you can change qbittorrent’s port in the config files.

breadsmasher , 9 months ago

You can also map different ports to the container. For sake of argument lets say qtorrent had a fixed port you cannot change, that’s just what the application listens to. You can then map a different container port to that application port.

tldr, OP, you can’t have two containers in docker on the same container port

thepianistfroggollum , 9 months ago

Fair enough, but OPs problem can be solved by changing a 0 to a 1 in a single file.

Fjor OP , 9 months ago

how haha

Fjor OP , 9 months ago

Right, my bad for the misleading/wrong title. This is my question - how do i map a port to a container that uses network_mode: …

Fjor OP , 9 months ago

Sorry that was my question, dont want to use the port twice, I want to tell the compose file what to use for each container, but I dont know how.

• Fixed the title, mb

breadsmasher , 9 months ago

In the VPN service you just expose the port you want and map it to the listener port on the service

vpn: ports: - 5000:8080 - 6000:8080

where you have

servicea listening on 8080 and serviceB on 8080 but exposed on 5000 and 6000 in the VPN service

for example

Fjor OP , 9 months ago

sorry im still quite new to this… do u have an example of another compose file that does this? Not sure where I put what.

breadsmasher , 9 months ago

On my phone so I haven’t got the access to give you a good example.

You see in your compose file in your original post you have ‘8080:8080’ under ports?

You should be able to add another line, the left hand side of the colon exposing a different port like so

<span style="color:#323232;">…
</span><span style="color:#323232;">ports: 
</span><span style="color:#323232;">    - ‘8080:8080’
</span><span style="color:#323232;">    - ‘9090:9090’ 
</span><span style="color:#323232;">…
</span>

then one service you can access on port 8080 and the other you access on 9090

then under each service you want to expose you add the other port mappings

<span style="color:#323232;">qtorrent:
</span><span style="color:#323232;">    ports: 
</span><span style="color:#323232;">        - 8080:8080
</span><span style="color:#323232;">
</span><span style="color:#323232;">sabnzb:
</span><span style="color:#323232;">    ports: 
</span><span style="color:#323232;">        - 9090:8080
</span>

edit - so you should end up with the vpn container exposing 8080 which points to the service exposing 8080 which maps to application listening on 8080

and the same for 9090 -> 9090 -> 8080

Fjor OP , 9 months ago

but I thought the containers had to have “network_mode: container:vpn”, in order to strictly only be able to communicate through the VPN.

breadsmasher , 9 months ago

When I am home Ill get an example from my setup 👍

Fjor OP , 9 months ago

mercii :)

Fjor OP , 9 months ago

when I do this I get the error message that the ports are already in use by the vpn container :|

thepianistfroggollum , 9 months ago

Ah, well the qbittorrent config file should live in the directory you mapped to /config. I think you can pull the default one and edit it for your container.