We have installed a BM 3.8 SP4 with NW 6.5 SP3 on a Compaq Proliant DL360.

We use the Client to Site VPN Service.

VPN users can login and it works rather fine. But after circa 7 days the
VPN Client hangs at authentification.

So I have to restart the server and then it works fine again.

How can I make the VPN server more reliable?