Hans makes it possible to tunnel IPv4 through ICMP echo packets, so you could
call it a ping tunnel. This can be useful when you find yourself in the
situation that your Internet access is firewalled, but pings are allowed.
Hans runs on Linux as a client and a server. It runs on Mac OS X,
iPhone/iPod touch, FreeBSD and OpenBSD as a client only.
You probably want also install packages hans-client or hans-server or both
