Hi all, I feel extremely frustrated about this issue, the scenario is:
I have Solaris 9 X86 box, on which installed ipfilter as my home firewall (2 NICs, one connects to DSL modem, another one to local network). I setup VPN on Windows 2003 server (running behind Soalris, 1 NIC, Domain Controller), forward port 1723 to 2003 server and enable protocol GRE on solaris. Using XP as VPN client out of home (DSL/Dial-up internet connection), everything seems working ok so far, I can browse home netwrok resource via VPN, using home printer, etc., But after about 30 miuntes the VPN connection drops automatically and even internet connection on XP becomes dead too. I can still see these two connections icons on system task bar, but can not browse VPN resource any more, and can not surf internet either with VPN XP client, looks like call connections disconnected. IPconfig indicates internet connection and ppp is still alive though, but ping is always time out. I check the event log file on 2003 server, nothing out there related to VPN drop line. After manually disconnecting the VPN connection, the internet connection comes back to life. And I have to wait for a period of time so that I can reconnect VPN again. The dropped line problem occures roughly every 30 minutes consistently, which really drives me mad. Any one has any clue on this issue? Many thanks.