How do I install iptables under Redhat (RHEL) or CentOS or Fedora Linux operating systems?
In most Linux distros including Redhat / CentOS / Fedora Linux installs iptables by default. It has become a standard option in all distros. So there is a good chance that iptables is already installed in your server or workstation. But, you can use the following procedure to verify that iptables has been installed. Open a terminal Window or login using the ssh client to remote server. Make sure you logged in as root user. Type the following command:
OR for IPv6 firewall, enter:
ip6tables v1.3.5: no command specified Try `ip6tables -h' or 'ip6tables --help' for more information.
If iptables is installed, you should get the above message. You can use the following command to view the status of iptables command, enter:
# yum info iptables
Loaded plugins: downloadonly, rhnplugin, security Installed Packages Name : iptables Arch : x86_64 Version : 1.3.5 Release : 5.3.el5_4.1 Size : 653 k Repo : installed Summary : Tools for managing Linux kernel packet filtering capabilities. URL : http://www.netfilter.org/ License : GPL Description: The iptables utility controls the network packet filtering code in the : Linux kernel. If you need to set up firewalls and/or IP masquerading, : you should install this package.
If the above message does not appear, then type the following command to install iptables, enter:
# yum install iptables
OR to install IPv6 firewall, enter:
# yum install ip6tables
How Do I Use iptables Command To Configure Firewall?
See our CentOS / Redhat Iptables Firewall Configuration tutorial for more information.