Security Commands

An overview of essential commands for securing and monitoring your Linux system.

Fail2Ban

An intrusion prevention software framework that protects computer servers from brute-force attacks.

sudo fail2ban-client status

iptables

A user-space utility program that allows a system administrator to configure the IP packet filter rules of the Linux kernel firewall.

sudo iptables -L -n -v

ufw

"Uncomplicated Firewall" is a user-friendly front-end for managing iptables firewall rules.

sudo ufw status