Is there anyway to encrypt novell lan data transmissions (nw 5.1/6.0)

from client to server without using VPN?

If VPN is the only way, is there a way to not change the way people
in? For example, all of our clients get the Novell login screen first

thing, and that's the only login they have to deal with. Most VPN
solutions I've seen require logging into the VPN first, which
can't work if the Netware login comes up first.

Would Bordermanager take care of this issue for me? Can bordermanager

work behind an existing PIX firewall without having to have another
private network behind bordermanager?

All in all, I just want to encrypt the data transmissions between the

client and server without the users having to do anything different.