Registered to a license manager; still labelled deslogin, a 1990s DES-encrypted remote login tool.
IANA registers 3005 as geniuslm, "Genius License Manager". Nmap and older service tables instead call it deslogin, an early encrypted-symmetric replacement for telnet/rlogin from before SSH existed, which is the label most scanners will print. Neither is common today; floating license daemons are the more plausible modern occupant of the 3000-3010 range on a workstation running commercial engineering software.
Expose with care
If it is a license manager, it should be reachable only from the LAN that needs licenses; if it really is a pre-SSH remote login daemon, treat it as never and remove it.
$ nc -vz -w 3 TARGET 3005Seen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
Get Beige Box →also available as JSON · Markdown
Corrections or a missing port? Reply @rimrocksystems.