You should have thorough knowledge of administrating IP, at least some knowledge of firewalls, ppp and ssh. I just decided to write down my experiences not to forget them. There are possibly some security holes indeed. As firewalls are in more and more widely use in internet and intranet security, the ability to do nice VPNs is important. Here are my experiences.
Comments are welcome.
I simply refer to them as the active and passive participants of the connection's setup. The host which is starts the setup will be referred as the master, and the passive participant will be the slave. Doing it 4.1. Planning Before you start to set up your system, you should know the networking details. I assume you have two firewalls protecting one intranet per firewall, and they are both connected to the internet.