ip banlama:
iptables -I INPUT -s 213.247.251.91 -j DROP

ip blogu banlama: ( bu özellikle uzakdoğu ip blocklamak için gerekli )

iptables -I INPUT -s 25.55.55.55 -j DROP (for one IP)
iptables -I INPUT -s 80.58.0.0/16 -j DROP (for a class C - that's X.X.X.(0-255) )
iptables -I INPUT -s 61.218.0.0/24 -j DROP (for a class B - that's X.X.(0-255).(0-255) )
iptables -I INPUT -s 221.0.0.0/8 -j DROP (for a class A - that's X.(0-255).(0-255) )

iptable ban kaldırma:

iptables -D INPUT -s 25.55.55.55 -j DROP