# WHATPORT(5925)

## NAME

port 5925 — Unassigned / VNC display :25 — No IANA assignment; a listener here is VNC display :25.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA has 5915-5962 as Unassigned, and 5925 carries no service name. RFB's 5900+display rule makes it display :25, which is the kind of number a hypervisor reaches when it has allocated a couple of dozen guest consoles. Nothing else well-known squats on it.

## EXPOSURE

**Do not expose.** Unauthenticated or weakly authenticated desktop access is the default failure mode of this port range — keep it on loopback or a management VLAN.

## CHECK

```sh
sudo lsof -nP -iTCP:5925 -sTCP:LISTEN
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) (iana.org)
- spec — [RFC 6143 — The Remote Framebuffer Protocol](https://datatracker.ietf.org/doc/html/rfc6143) (datatracker.ietf.org)

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HTML: <https://whatport.net/5925/> · JSON: <https://whatport.net/5925.json> · full dataset: <https://whatport.net/ports.json>