Hi!

I've been running nmap scans on a couple of my debian systems, and I'm finding that one unpriviliged UDP port is always showing open, but the port changes with every scan. Anybody know what's going on? Here's a few tests (edited for brevity):

debian:~# nmap -sU -p 40000-65535 192.168.1.100
PORT      STATE SERVICE
52979/udp open  unknown
debian:~# nmap -sU -p 40000-65535 192.168.1.100
All 25536 scanned ports on 192.168.1.100 are: closed
debian:~# nmap -sU -p 40000-65535 192.168.1.100
PORT      STATE SERVICE
41252/udp open  unknown

lsof doesn't show any such port open. The -sV switch doesn't give any extra info for these high ports.

Thanks,
Gabriel


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