iptables firewall specified port range in Linux

In Linux we commonly used firewall is iptables, but many friends do not know how to quickly iptables firewall to specify the port range, below I give you introduce.

I need a port between 700 and 800 to have TCP access

The code is as follows	Copy Code
-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 700-j ACCEPT -A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 701-j ACCEPT -A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 702-j ACCEPT ... -A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 800-j ACCEPT

This is very pit father Ah, will there be a better solution, below we look

The code is as follows	Copy Code
-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 700:800-j ACCEPT

This will be done, a sentence on it, the following a few more words iptables firewall some rules.

One, 700:800 represents all ports between 700 and 800

Ii.: 800 means all ports 800 and below

Three, 700: Indicates 700 and above all ports

We can take a look at the examples

The code is as follows	Copy Code
One,-a rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 7979:9898-j ACCEPT

Access 9898 Normal

iptables firewall specified port range in Linux