It seems that for P2P clients I need to setup some kind of port forwarding here: https://airvpn.org/ports/
Pretty confused as to what this does and how it should be setup. I've read up about here: https://airvpn.org/faq/port_forwarding/ but it hasn't really made things any clearer.
Say for example I use transmission or utorrent and have the port set at 9797. On my router I set port 9797 to then be forwarded to the same port on a specific local IP address.
Do I then need to go to the AirVPN port forwarding page and set both the port and the local port to 9797 too? What about DDNS?
Do I have to change or update this every time I switch servers? How does AirVPN know to always forward traffic from that port to me no matter which server I'm on? Bare in mind the company doesn't keep any logs or records