Hardening SSH Access Against Brute-Force Attacks with Fail2ban, Iptables, and Port Obfuscation
A common threat for any publicly reachable Linux server is the relentless scanning and brute‑force attempts against the default SSH port (22). Attackers use automated tools to try thousands of username/password combinations, often exhausting system resources and potentially gaining access through weak credentials. This guide outlines a practica ...
Posted on Sat, 04 Jul 2026 16:51:28 +0000 by remlabm
Configuring Fail2Ban with Email Notifications on UOS 1060
Setting Up Fail2Ban for SSH Protection
After installing Fail2Ban, verify the service is running:
systemctl status fail2ban.service
Output should show the service as active and running.
Configuring the Jail
Edit /etc/fail2ban/jail.local to enable SSH protection with email notifications:
[sshd]
enabled = true
port = ssh
action = msmtp-whois-line ...
Posted on Sat, 13 Jun 2026 16:13:27 +0000 by northstjarna