I am using openvpn on a Ipfire firewall to connect to 2 offices together, and it works well.
I dont use any other vpn on the 2nd office, but i do have a card machine, and they scan the network for which ports are being used.
is it possible to restrict port 1194 in the firewall rules to only allow 1 ip address.
I know i have the option of changing the port number. but that would be a pain as i would have to re-create it and i only have remote access at the moment.