As per subject. I have heard of default IPsec support on later versions of Linux kernel (without need to recompile or install special packages) but maybe it's a rumour?
Interested in both VPN connectivity scenarios:
- Server-to-Server (e.g. interconnecting geo-distibuted networks)
- Client-to-Server (Windows, iPhone and Blackberry users connecting to the VPN server to access all/part of corp network)