I had PPTP working on our primary Internet connection.
We recently added a second Internet connection. How I get some very strange behaviors.
Often times, I just can’t connect to the VPN at all.
Other times, I connect to the VPN, but my traffic doesn’t go through (i.e. I can’t even ping the firewall)
Other times, it just works.
I don’t see anything in the logs to indicate that traffic is being rejected.
Could this be an issue w/ connection tracking??
After VPNing in, I tried to connect via HTTP to the firewall interface. It looksl ike the traffic is stuck at TCP state: “syn received”
Also, if I disable the second network connection, everything seems to go back to working again.
Is it possible that sinec VPN connections come in through a different interface, that their routing is somehow getting confused? I.e. I VPN through “connection A”, but maybe the return traffic is being sent out “connection B”???