Trying to wrap my head around this issue. We have a Balance 305 with 2 WAN ports and 13 public IPs associated to WAN1. We do one to one NAT for a number of customers that need a static public IP.
When “Remote User Access -> PPTP” is turned on, it breaks PPTP access to any client behind the router. I have specifically turned off PPTP listening on WAN1 (all IPs). I can verify that the router only allows me to PPTP to it on WAN2.
However, no clients are able to PPTP to their personal routers through WAN1 IP addresses. As soon as I completely turn off PPTP on the Peplink, it works for all the clients behind it.
Why is the Peplink intercepting PPTP requests on a WAN port that is was specifically told not to listen on? How do I get around this limitation?