I have a Linksys Cable Modem and Linksys Wireless Router (BEFW11S4) with firmware 1.45 (Feb. 28, 2003). My office uses Cisco VPN and if I connect through the cable modem everything works fine. If I connect through the router (either directly connected or wireless) I am able to connect via the Cisco VPN client, but if I try and open Microsoft Outlook I am prompted for my password, but then it hangs. I can, however, ping network servers. I have made the recommended Port Triggering modifications (47, 1723 and 50, 500) and enabled MTU to 1300. I currently have Transparent Tunneling enabled and 'Allow IPSec over UDP' enabled. Does anyone have any idea what other settings I need? Does my office need to disable NAT transparency on the VPN server?