Issue: QuickVPN 1.2.5 hangs on Vista Home Premium when remotely creating a VPN on a WRVS4400N router with Firmware version 1.00.16. What is working: The connection is made! "Online" is indicated in the WRVS4400N VPN Status. I am also able to change the VPN password remotely. What is not working: QuickVPN waits for the IP Ping test to the WRVS4400N Gateway to respond. Eventually, it will time out. A manual (command line) ping across the VPN of the remote gateway (WRVS4400N) fails as well. Information: I found a good indicator of what is happening in the firewall VPN logs. The VPN is set up properly to the point where the error is created indicating that the remote network (remote to the WRVS4400N) is unknown - the other end of the tunnel. One sub-domain is unable to see the other sub-domain. The subnet mask of the QuickVPN client is 255.255.255.255 while the subnet mask of the WRVS4400N is 255.255.255.0. The IP address of the QuickVPN client is irrelevant. Although I tested the client behind a Linksys router on a Personal area network (192.168.0.X) to the WRVS4400N network (192.168.1.X), I also tested the client in the DMZ (on the Internet - 76.26.X.X) directly to the WRVS4400N with the same results. QuickVPN considers the IP address of the client to be a subnet of one (255.255.255.255). From a little reading, the issue seems to be with the implementation of NAT-T and seems to be in the router firmware 1.00.16 and not the QuickVPN client. I also tried the latest version of QuickVPNplus with results indicating the same issue. I may try the Cisco VPN client later. Next, I need to get a copy of the WRVS4400N logs into this message. Request: If anyone has more information, or has been able to get QuickVPN 1.2.5 to work on a WRVS4400N 1.00.16 from any machine (even non-Vista), please let me know.