I would like to limit access to a PPTP VPN server by source IP address. The server always runs on port 1723, such is PPTP.
According to the explanation in the router GUI regarding inbound firewall rules, it is NOT possible to limit access to port 1723 by source IP when the router is the VPN server.
However, if a PC on the LAN is running a VPN server, then port forwarding is needed to direct incoming requests on port 1723 and in this case, inbound firewall rules can be used to limit access by source IP address.
Is this correct?