Port 2429: ft-role — A Name Without a Protocol

What Port 2429 Is

Port 2429 sits in the registered ports range (1024–49151). IANA lists it as assigned to a service called ft-role, registered for both TCP and UDP by a contact at atg.clr.com — a domain that no longer resolves.¹

No RFC defines ft-role. No public documentation explains what the acronym stands for or how the protocol works. The registrant organization appears to be defunct. In every meaningful sense, port 2429 is unassigned.

The Registered Ports Range

Ports 1024–49151 are registered ports, also called "user ports." Unlike the well-known ports below 1024 (which require root/administrator privileges to bind), registered ports can be used by any application.

The intent: vendors and developers register a port number with IANA so their software has a consistent, non-conflicting home. The reality: many registrations are decades old, made by organizations that no longer exist, for protocols never publicly specified. Port 2429 is one of hundreds in this condition.

Ghost Registrations

The IANA port registry was never designed to expire. A company could register a port in 1995, dissolve in 2001, and that registration sits in the registry indefinitely — blocking the space, providing no useful information to anyone who looks it up.

This matters less than it might seem. Applications that need a port number either register one through the formal IANA process, or simply pick something in the dynamic/ephemeral range (49152–65535) and move on. Ghost registrations are mostly harmless — a kind of bureaucratic sediment.

What Might Actually Be on Port 2429

If you see activity on port 2429, it isn't ft-role. It's whatever application on your specific machine decided to use it — likely an ephemeral connection from your operating system, a game, or custom software.

Check what's actually listening:

Linux/macOS:

ss -tlnp | grep 2429
# or
lsof -i :2429

Windows:

netstat -ano | findstr :2429

If nothing appears: the port is closed and nothing is listening. Normal.

Security Considerations

Port 2429 has no known malware associations. An open port here would mean some application on your machine bound to it — check with the commands above to identify what.

The more general point: obscure port numbers don't provide security through obscurity. Any port scan will find them regardless of how unfamiliar the number looks.