Linux Open Service Port

Installing the Tomcat server on CentOS 6.5 requires an open service port for other computers to access Web apps deployed in Tomcat. Here's how to open a port.

There are two ways I know. The following is an example of an open 8080 port.

Method One: Command line mode

1. Open port command:/sbin/iptables-i input-p TCP--dport 8080-j ACCEPT

2. Save:/etc/rc.d/init.d/iptables Save

3. Restart Service:/etc/init.d/iptables restart

4. Check if the port is open:/sbin/iptables-l-N

Method Two: Directly edit the/etc/sysconfig/iptables file

1. Edit the/etc/sysconfig/iptables file: vi/etc/sysconfig/iptables

Add content and Save:-a rh-firewall-1-input-m State--state new-m tcp-p TCP--dport 8080-j ACCEPT

2. Restart Service:/etc/init.d/iptables restart

3. Check if the port is open:/sbin/iptables-l-N

Note: Need to pay attention to the specific protocol open port, I then open a port, the protocol was wrong, find a long time to find the reason.

Linux Open Service Port