#sre

Articles tagged with #sre

Intercepting Dangerous Shell Commands with Shellfirm
Shellfirm is a lightweight safety layer for interactive shells that helps prevent accidental or malicious execution of destructive commands. It works by installing a small shell hook that inspects eac
Apr 18, 20263 min read32
Sending SSH Login Alerts to Telegram
Monitoring SSH logins is a simple but powerful way to improve the security and situational awareness of your servers. By sending immediate alerts when someone authenticates (or fails to authenticate)
Apr 18, 20263 min read6
Preventing Brute Force Attacks with Fail2ban
Fail2ban is a lightweight, widely used intrusion prevention tool that helps protect servers from brute-force attacks and other repeated authentication failures. It continuously monitors log files (for
Apr 18, 20265 min read13
Controlling Port Access with UFW
UFW (Uncomplicated Firewall) is a user-friendly front end for iptables designed to make managing a host-based firewall simpler. It’s available on Debian/Ubuntu and many other Linux distributions and p
Apr 18, 20263 min read2
Hardening Ubuntu Server with OpenSCAP
OpenSCAP is an open‑source implementation of the Security Content Automation Protocol (SCAP). It provides a framework and tooling to automate security compliance tasks: assessing systems against publi
Apr 18, 20264 min read17