#ssh

3 posts tagged with #ssh

March 18, 2026 · 6 min read

OPNsense Hardening: Lock Down Your Firewall After Install

Seven steps to harden a fresh OPNsense install: restrict the admin interface, lock down SSH, enable automatic updates, disable unused services, audit firewall rules, and set up Suricata IDS.

#opnsense #firewall #security

March 16, 2026 · 7 min read

Fail2ban on Debian 13: The Right Config for OpenSSH 9.x

The base configurations of fail2ban to protect the linux server, tested against real wrong-key attempts.

#linux #debian #security

March 15, 2026 · 14 min read

Linux Server Security Baseline: What Every DevOps Engineer Should Apply

Seven hardening steps to run on any fresh Debian or Ubuntu server — whether it is an AWS EC2 instance, a GCP VM, or bare metal. SSH hardening, UFW, Fail2ban, and automatic security updates.

#linux #debian #ubuntu