hi,
i have setup netware 6.5 sp2 with bordermanager sp2 and configure as vpn
site to site server which are one mastervpn and 10 slave server that
using the adsl line. all the server running fine last 6 months.
recently, all my slave vpn tunnel getting disconnected with
mastervpn ,then i try to restarted all the slave server and get tunnel
connect again. but it just connect for few hours and disconnected.
this happening every day at least once and normally tunnel disconnected
after working hour.
following is the message i get from logger screen master vpn server.
the wall call to <ip address> on interface port VPTUNNEL is disconnected.

And also the csaudit log message from slave vpn server.
PFS NOT ENABLED-- DELETING ALL IPSEC SA