Background UDP Ping is really useful especially to see if SNMP is running. The syntax for UDP checking commands is a bit obscure so we’ve listed a few variants. NMAP SNMP running on port 161 UDP, closed: ➜ ~ sudo nmap -sU -p 161 server1.example.com Starting Nmap 7.93 ( https://nmap.org ) at 2025-06-11 14:36 SAST … Continue reading How to do UDP Ping with Linux