How to install
1. mkdir /usr/local/sshtun
2. copy sshtun.sh and sshkey to /usr/local/sshtun
3. copy sshtun to /usr/local/etc/rc.d
4. update rc.conf.local from genesis (the two sshtun_* vars are required)

sshtun.sh:
The main program.

sshkey
The sshkey to access the central server. The key is useless without preconfigureing the central server (though I am sure some people will disagree).

sshtun:
The startup script.