DSL Router and VPN Client won't play nice

[huntron]

This is probably an easy one but I don't muck around in this area very frequently. My DSL router/modem (Westell 327W) prevents me from connecting to work via my Contivity VPN client when the router's firewall security level is set to High. When I sent the security level to low, the connection can be successfully established. The note next to the High check box says that IPSEC traffic is permitted in this mode and I thought that is all I needed to get the VPN working. I think I need to go to medium security level but I don't know which service I need to turn on. It is the weeked so I can't ask my company IT support and the IT web pages not helpful.

Thanks in advance!

 

[brutalmass]

huntron

are you sure you are using IPSEC not PPTP? if you are using PPTP then you need to unblock the VPN port which is TCP port number 1723.

That may explain why with low security you are able to establish a connection.

 

[huntron]

I finally tracked down what I needed and paid attention to the firewall log. With the Westell firewall set to medium security, I enabled IPSEC ESP (Protocol 50) and IPSEC IKE (UDP 500) traffic. Even after this, I was getting firewall log entries once a second from the IP address of the computer trying to connect via VPN. This computer was trying to do UDP from Source port 1179 to destination port 4500 and the firewall was dropping the traffic. After I added a user configured service to accomplish this, I am in!