I'd like to connect two remote sites via a secure point to point tunnel. I've been using OpenVPN, but it's a little flakey and really seems to be more for connecting lots of users rather than a point to point link.
Redhat seems to have some nice built in scripts for building Point to Point IPSEC tunnels, but I haven't found anything similar in Ubuntu.
Any guidance on what to use here and how to do it? I'd like to keep it as simple as possible, but still have basic PSK security.