iptables guide and examples and howto

iptables allow port 22 example


Of course change --dport and -s to suit your needs


#allow certain IP to access port 22
 iptables -A INPUT -p tcp -m tcp --dport 22 -s 192.168.1.0/24 -j ACCEPT


# block others
iptables -A INPUT -p tcp --dport 22 -j DROP


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iptables, examples, howtoiptables, dport, ip, input, tcp,

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