Hamachi is a (for individual users free) program which simulates a LAN. It
is like all players are on the same Local Area Network, while in reality,
you can be in different places, countries or, yes, even worlds.
This way, you can play games without an online server. (Or play with your
friends without the possibility of strangers joining your game)
While using Hamachi, you will not be bothered with firewalls. Without
Hamachi, you have to open the correct portals, otherwise people will not
see the game you are hosting or you can not see the game you are looking
for.
And
which one of the several million portals is the one to open? Most games do
not share this information with you.
That's why one of the Forsaken
clanmembers
registered several Hamachi Networks.
Why several? Because per network there can be only 16 members. That means
each Lan game must have it's own network, otherwise only 16 members can
play these game, or the admin would have kick kick all members each
session. Creating a network per game is easier and more user-friendly.
The Network names and passwords can
be found at the forum in the game-topic "Hamachi".