When and How to Use Iptables and Ipsets

iptables and ipsets are both tools that are commonly used in Linux-based operating systems for managing network traffic. However, they serve different purposes and have different capabilities. iptables is a firewall tool that allows you to configure rules for filtering and manipulating network traffic. It uses a set of predefined chains (INPUT, OUTPUT, and FORWARD)… read more »

How to Create Sudo User on CentOS

Working with root (admin privileged user) in CentOS is not a good idea because you can easily make a costly mistake. Instead, it’s much better to grant the special sudo privileges which allow a regular user to run super user commands by just preceding the commands with sudo in front. Example of a sudo command:… read more »