Guides about hardening
- How to secure a new Linux server in the first hour A new server is reachable from the internet the moment it boots. These steps close the most common gaps before you install anything else. Beginner 30 min
- SSH hardening: lock down OpenSSH on Ubuntu and Debian With keys in place, a few more SSH settings shrink the attack surface further. Apply them in one drop-in file and verify each change before you log out. Intermediate 20 min
- How to secure a new Windows Server in the first hour Remote Desktop on the open internet attracts constant password guessing. These steps make a new Windows server a much harder target. Intermediate 25 min