RedHatLinux firewall configuration under the command line

In RedHatLinux, configure a firewall under the firewall configuration graphical interface under the command line as follows: (enable Https, SSH, and HTTP ports) under the command line, modify the File:/etc/sysconfig/iptables and add the following lines: [plain]-AINPUT-mstate -- stateNEW-m... in RedHat Linux, configure a firewall in the command line firewall GUI as follows: (enable Https, SSH, and HTTP ports). in the command line, modify the file: add the following lines to/etc/sysconfig/iptables: [plain]-a input-m state -- state NEW-m tcp-p tcp -- dport 443-j ACCEPT-a input-m state -- state NEW-m tcp-p tcp -- dport 22-j ACCEPT-a input-m state -- state NEW-m tcp-p tcp -- dport 80-j ACCEPT and then restart the network service: [plain] # serviceiptables stop # serviceiptables start