We have 2 Novell 6.5 servers running Border Manager. What is the risk
of removing the VPN configuration? These are no longer used. It's just
an open hole I want to close. Basically, I would like to know if
removing the service will require a reboot, alter any of the firewall
rules, temporarily stop traffic, etc.... I'm not a netware guy so I
want to make absolutely sure the risk is minimal.

As far as I can see the steps to remove the server are as follows:

load vpncfg
Scroll to: Remove VPN Server Configuration

thanks in advance....