*filter
:INPUT ACCEPT [441918:285581087]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [338475:50189610]

# ICMP and related traffic
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp --icmp-type any -j ACCEPT

# SSH - only from home, work and my other VPSes
-A INPUT -s 184.153.99.97/32 -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -s 24.213.156.49/28 -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -s 198.144.185.126/32 -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -s 108.61.74.195/32 -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -s 76.74.200.115/32 -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT

# web
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT

# quake2
-A INPUT -p udp --dport 27910 -j ACCEPT

# quake2world
-A INPUT -p udp --dport 1998 -j ACCEPT

# quake3
-A INPUT -p udp --dport 27960 -j ACCEPT

# ignore everything else
-A INPUT -j DROP

COMMIT