Summary of centos firewall (for details about other Linux releases)

View Firewall Information /Etc/init. d/iptables status
Enable specified port /Sbin/iptables-I input-P TCP -- dport 8080-J accept /Etc/rc. d/init. d/iptables save Or Edit /Etc/sysconfig/iptables Add row: -A RH-Firewall-1-INPUT-M State-State new-m tcp-p tcp-dport 8080-J accept # Available -I input-P TCP -- dport 8080-J accept
Make the changed firewall effective /Etc/init. d/iptables restart # It is not recommended to restart the system to disable the Firewall Service. /Etc/init. d/iptables stop
Permanently disable the Firewall Chkconfig-level 35 iptables off # This method is originated from the network and has not been tested. Therefore, you are not allowed to use this method for security reasons.