Port Configuration

To allow your ATLAS server to communicate with the outside you have to open some ports in your firewall:
(Example port ranges for a 4 server grid)

5755X = Query Ports
575X = Game Client Ports (Leave + 1 space between servers)
3233X = RCON Ports
2700X = Seamless Ports

Tip	2x2 Server Port Mapping Example (4 servers) The Game Port +1 usage has not been confirmed by Grapeshot. Subject to change.

Server	Grid	X/Y	Query Port	Game Port	Game Port +1	RCON Port	Seamless Port
AtlasServer_01	A1	0/0	57550	5750	5751	32330	27000
AtlasServer_02	A2	0/1	57551	5752	5752	32331	27001
AtlasServer_03	B1	1/0	57552	5754	5755	32332	27002
AtlasServer_04	B2	1/1	57553	5756	5757	32333	27003

How to open these ports on your Linux firewall:

iptables -I INPUT -p udp --match multiport --dport 57550,57551,57552,57553 -j ACCEPT
iptables -I INPUT -p tcp --match multiport --dport 57550,57551,57552,57553 -j ACCEPT
iptables -I INPUT -p udp --match multiport --dport 5750,5751,5752,5753,5754,5755,5756,5757 -j ACCEPT
iptables -I INPUT -p tcp --match multiport --dport 5750,5751,5752,5753,5754,5755,5756,5757 -j ACCEPT
iptables -I INPUT -p tcp --match multiport --dport 32330,32331,32332,32333 -j ACCEPT
iptables -I INPUT -p tcp --match multiport --dport 27000,27001,27002,27003 -j ACCEPT
iptables -I INPUT -p udp --match multiport --dport 27000,27001,27002,27003 -j ACCEPT