Firewall and local IP

Hello,

I have a mutliserver conf
I set a local network with wireguard (discussed on that forum)
I don't understand why I can't connect a port through local network

I want to connect serv2, port 5349.
On serv2

Code:

ufw status verbose | grep 5349
5349/tcp                   ALLOW IN    Anywhere
5349/udp                   ALLOW IN    Anywhere
5349/tcp (v6)              ALLOW IN    Anywhere (v6)
5349/udp (v6)              ALLOW IN    Anywhere (v6)

form serv1
with external IP : telnet <external IP> 5349 gives connected
with local IP (wireguard) : telnet <internal IP> 5349 gives connexion refused

I don't understand what happens

 

Does your STUN Server listen on all network interfaces? Be aware that wireguard creates it's own network interface.

 

That's obvious !
in turnserver.conf, I changed listening_ip=<my external ip> to listening_ip=0.0.0.0
Thanks a lot