# WHATPORT(2607)

## NAME

port 2607 — FRRouting ospfd OSPF API — Not a vty — this is ospfd's OSPF API, the socket that lets an external program inject LSAs.

Protocol: TCP  
IANA: connection (Dell Connection)

## DESCRIPTION

FRRouting defines 2607 as OSPF_API_SYNC_PORT: the API server ospfd opens when started with -a/--apiserver, which ospfclient and traffic-engineering or segment-routing controllers use to originate and read opaque LSAs. It is off unless someone enabled it, and it sits one port above the ospf6d vty (2606) rather than belonging to the vty series. IANA registers 2607 as "Dell Connection", which is a separate and rarely seen assignment.

## EXPOSURE

**Do not expose.** The API can originate LSAs into the OSPF domain with no authentication of its own — FRR's own guidance is to bind it to 127.0.0.1 with --apiserver_addr.

## CHECK

```sh
nc -vz -w 3 TARGET 2607
```

## SEE ALSO

- source — [FRRouting — lib/libfrr.h (OSPF_API_SYNC_PORT 2607)](https://github.com/FRRouting/frr/blob/master/lib/libfrr.h) (github.com)
- docs — [FRRouting docs — ospfd (-a/--apiserver, --apiserver_addr)](https://docs.frrouting.org/en/latest/ospfd.html) (docs.frrouting.org)
- iana — [IANA Service Name and Transport Protocol Port Number Registry — 2607 (connection)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=2607) (iana.org)

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HTML: <https://whatport.net/2607/> · JSON: <https://whatport.net/2607.json> · full dataset: <https://whatport.net/ports.json>