Added wiki page and cleaned up dirs and users

docs/wiki/index.md

@@ -11,7 +11,9 @@ This is an index of existing articles:
   - **[Basic Example](/wiki/examples/example-1)**
   - **[Example Configuration Where Port Forwarding Is Not an Option](/wiki/examples/example-2)**
 - **[Exposing Services Safely](/wiki/expose)**
-- **[Running Services Not Covered by Nixarr Through a VPN](/wiki/vpn)**
+- **VPN**
+  - **[Running Services Not Covered by Nixarr Through a VPN](/docs/wiki/vpn/uncovered-services)**
+  - **[Opening Ports](/docs/wiki/vpn/ports/index.md)**
 
 For learning how to setup the "*Arrs", once running, refer to the [servarr
 wiki](https://wiki.servarr.com/)

docs/wiki/vpn/ports/index.md

@@ -0,0 +1,45 @@
+---
+title: Opening Ports
+---
+
+In order to open a port through a VPN you need to open a port with your VPN-provider.
+
+> **Note:** Not all VPN-providers support this feature! Notably, Mullvad does not anymore!
+
+> **Note:** The port present in the
+>   [nixarr.vpn.wgConf](https://nixarr.com/options.html#nixarr.vpn.wgconf),
+>   should not be used for any options!
+
+## AirVPN
+
+Go to the [ports page](https://airvpn.org/ports/) at AirVPN's website open
+a port. After opening it should look like this:
+
+![An open port on AirVPN, the port number that should be used in Nixarr is 12345.](./airvpn.png)
+
+Then you can set that port for a service, for example
+
+```nix {.numberLines}
+  nixarr.transmission = {
+    enable = true;
+    vpn.enable = true;
+    peerPort = 12345;
+  };
+```
+
+## Debugging Ports
+
+You can debug an open port using the
+`[vpnTestService](https://nixarr.com/options.html#nixarr.vpn.vpntestservice.enable)`.
+If the DNS and IP checks out, it will
+open a `netcat` instance on the port specified in
+`[vpnTestService.port](https://nixarr.com/options.html#nixarr.vpn.vpntestservice.port)`.
+You can then run:
+
+```sh
+  nc <public VPN ip> <specified port>
+```
+
+Where the "_public VPN ip_" is the one shown in the `vpnTestService` logs as
+your ip. Upon succesful connection type messages that _should_ show up in the
+`vpnTestService` logs.