The OpenVPN cookbook shows an example for site-to-site VPN (3 sites). They configured each tunnel on a unique port:
- site A to site B: 1194
- site A to site C: 1195
- site B to site C: 1196
The author does not give any information about it. I didn't find anything useful in the man pages.
Is this a rule? Should we assign a unique port for every single point to point tunnel?