# WHATPORT(7999)

## NAME

port 7999 — Bitbucket SSH (IANA: irdmi2) — Git over SSH for Bitbucket Data Center — the port in every `ssh://git@host:7999/` clone URL.

Protocol: TCP  
IANA: irdmi2

## DESCRIPTION

IANA registers 7999 as irdmi2, a name almost nobody uses. What actually listens here is Bitbucket's embedded SSH server: Atlassian's own Helm chart and Docker instructions default `bitbucket.ports.ssh` to 7999, which is why Bitbucket clone URLs carry the port explicitly while the web UI sits on 7990. It is a normal SSH server implemented in Java, speaking only the Git commands, not a shell.

## EXPOSURE

**Fine to expose.** Public Git-over-SSH is the intended deployment: it is public-key only, and the SSH server exposes Git upload/receive-pack rather than a login shell. Pair it with the usual SSH hygiene and keep the 7990 web port behind whatever fronts it.

## CHECK

```sh
ssh -p 7999 -o BatchMode=yes git@TARGET
```

## SEE ALSO

- source — [Atlassian data-center-helm-charts — Bitbucket chart (bitbucket.ports.ssh defaults to 7999)](https://github.com/atlassian/data-center-helm-charts/blob/main/src/main/charts/bitbucket/README.md) (github.com)
- iana — [IANA Service Name and Transport Protocol Port Number Registry — 7999](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=7999) (iana.org)

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