security - Restricting MySQL 3306 port with IPTABLES -


how block mysql port 3306 everybody, allow specific ip? do:

iptables -i input 1 -p tcp --dport 3306 -j accept

you need multiple rules that. in cases, happen connection depends on first rule, matches. so, first accept our friends connection, second, drop other. voila!

iptables -i input 1 -p tcp -s 1.2.3.4 --dport 3306 -j accept iptables -i input 2 -p tcp --dport 3306 -j drop

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