The auto-updater is the first part of the game to access the net. If the primary connection is chosen, it will try to
connect via TCP to 18.104.22.168:6214. If this connection fails it will automatically revert to the backup connection.
The backup connection will try to reach the update server via TCP at 22.214.171.124:6214. Older clients (which haven't been
updated for a long time) will use 126.96.36.199:6214 if backup is chosen.
The next network access is done by the actual game client. If the primary connection is chosen, it will try to connect via TCP
to one of the hosts in the subnet 188.8.131.52/28 (ie. 184.108.40.206 to 220.127.116.11) to one of the ports in the
range 5556 to 5570.
The backup connection will try the subnet 18.104.22.168/29 (ie. 22.214.171.124 to 126.96.36.199) instead.
The website is at 188.8.131.52 and at 184.108.40.206 (port 80 for http and port 443 for https). The name server entries of
www.astonia.com and www.intent-software.com will point to the one deemed more stable.
A recommended firewall configuration would consist of:
allow outgoing tcp to 220.127.116.11/28 to ports 5556 to 5570 and port 6214
allow outgoing tcp to 18.104.22.168/29 to ports 5556 to 5570 and port 6214
allow outgoing tcp to 22.214.171.124/32 to ports 5556 to 5570 and port 6214
This configuration assumes that return packets and web access are already allowed (which is almost always the case).