How to open and close Linux firewalls

Source: Internet
Author: User
Tags iptables

1) effective after reboot

Open: Chkconfig iptables on

Close: Chkconfig iptables off

2) immediate effect, restart after failure

Open: Service iptables start

OFF: Service iptables stop

It should be explained that for other services under Linux, you can use the above command to perform the open and close operations.

When the firewall is turned on, make the following settings, open the relevant port,

Modify the/etc/sysconfig/iptables file and add the following:

-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 80-j ACCEPT

-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 22-j ACCEPT

Related Article

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

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.