# WHATPORT(3971)

## NAME

port 3971 — LANrev server — The agent-facing port of the LANrev endpoint management server — the product formerly sold as Absolute Manage.

Protocol: TCP  
IANA: lanrevserver

## DESCRIPTION

IANA registers 3971 as lanrevserver. LANrev is client and asset management software: a server plus agents on Windows and macOS endpoints that inventory hardware and software, push packages, and run administrative tasks remotely. It has changed hands repeatedly — originally Pole Position Software's LANrev, sold as Absolute Manage, then HEAT LANrev, and latterly under Ivanti — and the registration is held by the original developer. A listener on 3971 is a management server for a fleet of managed desktops.

## EXPOSURE

**Do not expose.** This server can install software and execute administrative tasks on every managed endpoint; reaching it from the internet is reaching the fleet. Publish nothing here and require a VPN for off-network agents.

## CHECK

```sh
nc -vz TARGET 3971
```

## SEE ALSO

- docs — [Ivanti — LANrev 7.3.2 release notes (product and lineage)](https://help.ivanti.com/ht/help/en_US/LANrev/7.3.2/LANrev%207.3.2%20Release%20Notes.pdf) (help.ivanti.com)
- iana — [IANA port registry — 3971 (lanrevserver)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3971) (iana.org)

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