VPN connection freezes with SEP firewall on

I connect to a customer's site using Avaya VPN.  I can access through the VPN only when SEP is disabled.  Once SEP re-enables after 5 minutes (my employer's policy), the connection to the customer site freezes and I need to disable SEP again before the connection unfreezes.  I've added exceptions for the VPN's IP and the Avaya folder and executable iteself, and have tried to add port exceptions in the SEP applications settings for the Avaya SEP, but I'm not sure this was done correctly.  The customer says that the following needs to be set in the firewall rules:

Destination: 206.47.249.94 (added as an exception)

UDP  500 (by directional)

UDP 49000

ESP ( Protocol 50)

AH (Protocol 51)