I have a windows server 2003 IPSec server I've been managing for a few years. Recently I've replaced our firewall with an RV220W. I've copied all of the settings identically from our previous firewall (firewall rules for PPTP, IKE, NAT-T). Now, the VPN connects just fine and functions perfectly, but at exactly 3:00 minutes it disconnects. I've tried sorting through logs on my PC, the server, and the RV220W and can't decipher what the problem is. I've also done some reading regarding changing MTU settings, which I've tried with no luck. I'm connecting from the same PC behind the same home router to the same server I've been connecting to for over 5 years...I'm at a loss.
Any ideas would be GREATLY appreciated. Thanks.
So I've pinpointed my problem to be my D-Link DIR-825 router at home. It seems like this is a pretty widely known issue, but I haven't been able to find any decent fixes. If anyone has any insight, I'd really appreciate it.