linux open port, linux port configuration, Linux port is closed

linux open port, linux port configuration, Linux port is closed

Open port

1.直接用命令开启端口
	开放端口命令----保存-----重启服务-------查看端口是否开放

	/sbin/iptables -I INPUT -p tcp --dport 6379 -j ACCEPT

    /etc/rc.d/init.d/iptables save
    
    /etc/init.d/iptables restart
    
    /sbin/iptables -L -n


2.修改文件配置
	1.编辑/etc/sysconfig/iptables文件：vi /etc/sysconfig/iptables
	加入内容并保存：-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 6397 -j ACCEPT
	2.重启服务：/etc/init.d/iptables restart
	3.查看端口是否开放：/sbin/iptables -L -n