iptables firewall specified port range in Linux

Source: Internet
Author: User

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

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.