how to set a fixed local port for OpenVPN and WireGuard?

[schwede 0]

Hello,

I run Eddie 2.27.2 on Windows Server 2019. My network has a firewall/filter that treats unknown UDP traffic very strictly,
hich slows VPN tunnels down a lot (WireGuard only reached about 300 Kbps, OpenVPN about 70 Mbps, while the connection without VPN runs at about 1 Gbps).
A filter for WireGuard and OpenVPN can be set up, but it only works for a fixed LOCAL UDP port on my machine (WireGuard 51820, OpenVPN 1194), not for the remote ports of the VPN servers.

So I need Eddie to use a fixed local port, but I did not find a way:

OpenVPN:
- In Settings > OpenVPN directives I set "Use only Custom directives" and added "lport 1194" (without the "nobind" line). Connecting fails with: "OpenVPN > Options error: --lport and --nobind don't make sense when used together".
- When I additionally add "bind", it fails with: "--bind and --nobind can't be used together".
- So it seems Eddie adds "nobind" to the generated config by itself, even when the base directives are not used.
- Running openvpn.exe manually with a config from the Config Generator (with lport 1194 and without nobind) works fine, so this is not a problem of the servers.

WireGuard:
- I did not find settings. Just MTU.

Questions:
1. Is "nobind" hard-coded in Eddie, and is there a supported way to use a fixed local port for OpenVPN?
2. Is there a way to set the WireGuard local port (ListenPort) in Eddie?
3. If not, could this be added as an option in a future version? It would help everyone behind networks with UDP filtering or strict firewall rules.

Thank you and best regards

[Tech Jedi Alex 1578]

Eddie silently ignores all changes to the base directives if in Append mode, and uses Base + Custom in Custom mode, so remove nobind from there and add your custom directives on the left, then set it to Custom mode.

Little tip: To check the OpenVPN config Eddie would use to connect to a server, in the Servers/Countries tab right click on an entry and select More.

Edited ... by Tech Jedi Alex
Corrections

[schwede 0]

Thank you for the tip, I tried it, but unfortunately it does not solve it.

I removed nobind from the Base directives and put "lport 1194" into the Custom directives.
I tried both modes ("Append Custom directives" and "Use only Custom directives").
In both cases the config shown under Servers > right click > More still contains "nobind", without any level comment, right after sndbuf/rcvbuf:

sndbuf 262144
rcvbuf 262144
nobind
lport 1194 # Custom level
remote-cert-tls server # Provider level

When connecting OpenVPN then stops with: "Options error: --lport and --nobind don't make sense when used together".
f I also add "bind" to the custom directives, it stops with: "--bind and --nobind can't be used together".
So the "nobind" line is added by Eddie itself, not by the base directives.

For comparison: if I start openvpn.exe manually with a config from the Config Generator (with lport 1194 and without nobind), the connection works.

For WireGuard, the config under More has no ListenPort, and I found no setting for it in Settings > WireGuard (only the MTU).

My questions:
1. Where does the "nobind" line come from in Eddie 2.27.2 (Windows), and is there a supported way to disable it so a fixed local port can be used?
2. Is there a way to set the WireGuard ListenPort in Eddie?
3. If not could an option for a fixed local UDP port (OpenVPN and WireGuard) be added in a future version? It would help in networks where a firewall or filter only works with a fixed local port.

Thank you!