Iptables is a firewall utility in Linux that lets you define granular IP packet filter rules for your server.
Tag archives: Iptables - Page 1
On Centos 7, the default firewall is firewalld. Even though this is just a shell interface to configure iptables, it has its limits when it comes to applying advanced rules and customizing your firewall.
We will set up a basic firewall that allows ssh and blocks all else except ping, traceroute and whatever services you need to be accessed.