What Port 2956 Is
Port 2956 sits in the registered ports range (1024–49151). These ports are managed by IANA, the Internet Assigned Numbers Authority, which maintains the official registry of port assignments for the Internet.
Unlike the well-known ports below 1024 — where port 80 means HTTP and port 443 means HTTPS — registered ports don't carry that same universal recognition. They're assigned to specific services upon request, but the services themselves may be obscure, internal, or long-abandoned.
The Registered Name: OVRIMOSDBMAN
According to the IANA registry, port 2956 is assigned to a service called OVRIMOSDBMAN on both TCP and UDP.1
What is OVRIMOSDBMAN? That's where the trail goes cold.
The name looks like an internal acronym — possibly something like "OVR IMOS Database Manager" — but no public RFC documents it, no open-source project claims it, and no major software vendor lists it in their documentation. It was registered with IANA and then, for all practical purposes, vanished.
This happens more than you'd expect. Organizations register ports for internal tools, proprietary protocols, or products that never ship broadly. The registration persists; the service does not.
What's Actually on Port 2956
Almost certainly nothing related to OVRIMOSDBMAN.
In practice, if you see traffic on port 2956, it's almost always one of three things:
- Custom application traffic — a developer or sysadmin picked an obscure registered port for an internal service
- Port scanning noise — automated scanners probe every port looking for anything that responds
- Ephemeral connections — your operating system may use registered ports as temporary (ephemeral) source ports for outgoing connections
How to Check What's Listening
If you want to know what's actually running on port 2956 on your machine:
Linux / macOS:
Windows:
The process ID in the output can be matched to a process name in Task Manager (Windows) or via ps (Linux/macOS).
Why Unassigned-in-Practice Ports Matter
The registered port range contains over 48,000 slots. Many are assigned to services that are obscure, defunct, or proprietary. This is not a flaw — it's how the system accommodates the long tail of Internet software.
What it means for you: a port number alone doesn't tell you what's running. A process listening on 2956 could be anything. The number is a hint, not a guarantee. Always verify with the tools above rather than assuming a port's registered name reflects its current use.
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