VPN clients for Linux

[Victor Usjanov]

Hello.
 
I have been looking lately after VPN clients for Linux. We got a VPN 
server running on Windows 2000 server - the standard VPN server that somes 
with Windows installation. I found several clients for Linux (we run 
RedHat 7.2), but i have problems with deciding which is better / more 
secure. Does anyone have any experience with such clients ? What do you 
think are better ? 
 
Thank you in advance
 
--
Victor