[vpn-help] Shutting down one tunnel disconnects all

[Tim Burns]

  I have 2 machines that often are on a public wireless network at a 
local building.  My office had a Netgear FVS-338 firewall, and we are 
establishing our tunnels to that box using the shrew client.

When we are both on at the same time, I have seen two things.

First, sometimes when the person on the second machine logs in on a 
remote destop connection, the first person's connection to remote 
desktop (on a different machine) disconnects.

Second, if either person disconnects the tunnel from their machine, all 
access is lost for the other machine, even though shrew's status says 
that the tunnel still exists.

I have tried setting these up on different rules within the firewall and 
with different address ranges so there is not a conflict, that didn't 
change anything.

Is this just part of the vpn, or am I missing something that allows us 
to independently control our tunnels?