[vpn] firewall-independent VPN

[Marc Jacquinot]

I've been looking for VPN solutions for a couple of days now. Can anyone 
tell me what's the most popular approach assuming you have Win 
98/Me/2000/XP clients and a Windows 2000 server. Of course the server side 
device can be a Linux or other Unix-like OS.

I would prefer a solution that can be added to an existing firewall, which 
is not Checkpoint's Firewall-1. I've seen a huge number of VPN solutions 
that hook into Checkpoint's OPSEC, but hope that there other ways to set up 
a VPN, too.

Furthermore the solution should be scalable on the server side and flexible 
on the client-side regarding the credentials required for authentication.

I am particularly interested in solutions that are open to third party 
smart cards or tokens via standard smart card and public key interfaces.

Many questions, I know. I count on your security focused expertise.

Thanks in advance,

Marc


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