VPN Disconnect

[Johnny]

We have a 2003 VPN server set up with a Pre-Shared Key. Works pretty well
for most of us.

A handful of users are getting disconnected 2-3 times a day and cannot get
back in for 5-10 min.

I see no correlation between disconnects i.e. it happens randomly.

I suspect their connections. One is dial-up and the others are various
forms of broadband.

At the time of disconnect I just get an Event ID 542 in the Security log.
It says IKE security association ended. While she is trying to reconnect I
see an Event Failure 547.
Failure Reason:

IKE SA deleted by peer before establishment completed

for her IP address.



After 10 min of trying she connects again.



Any ideas on how I can make these VPN connections more tolerant? Can I mess
with the IP stack for a virtual connection at the client?

 

[Thor]

I just set one up, the ISP drops the client even with a
continous ping running through the tunnel.

You might have to pay for a static IP for the clients or
tell them to relax.

 

[Johnny]

I don't follow you. Are you saying the ISP forces me to get a new ip
address periodically and that is what is killing my connection?