Linux permanently open port

/sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 3306 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 8000 -j ACCEPT
/etc/rc.d/init.d/iptables save
service iptables restart

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Origin www.cnblogs.com/IT-Crowd/p/11258148.html