I am trying to make a VPN tunnel between a Linksys WRV54g connected to cable modem to an IPCop firewall connected to a T1. I am using the Linksys BEFSX41 connecting to an IPCop with no problems, but if i set the WRV54G with the same settings, it is not working. The only difference I see in the set up between the two Linksys routers is that the BEFSX41 has SHA encryption for the authentication and the WRV54G has SHA1 for the authentication. I have tried using both types on the IPCop with no change. Any help would be greatly appreciated.