Today I put my basic nmap skills to practical use after getting unexpectedly kicked out of a PuTTY session. My Raspberry Pi 2 must have rebooted and grabbed a new IP via DHCP, which broke the connection.

Instead of diving into the router to dig around, I ran:

nmap -p 22 --open 192.168.1.0/24

This scanned my whole subnet for hosts with SSH (port 22) open. A few seconds later-boom-I had my Pi back. Even better, I discovered a few devices I didnt realize had SSH enabled. So, mini audit complete.

Lesson learned: Ill set a static IP for that Pi soon. But hey, it was a good reminder that quick terminal chops can save you time and expose some blind spots in your network.