Port 2411: Netwave AP Management — A Ghost Registration

What Port 2411 Is

Port 2411 sits in the registered port range (1024–49151). These ports are assigned by IANA to specific services — not first-come-first-served like the well-known ports below 1024, but not freely ephemeral either. In theory, a registered port means someone claimed it for a purpose and IANA recorded that claim.

Port 2411's claim: Netwave AP Management (netwave-ap-mgmt), registered by a company called Netwave Wireless. The IANA registry lists the assignee as Johnny Zweig, with a contact at netwave-wireless.com.¹

That domain no longer resolves to anything.

What "Netwave AP Management" Was

Netwave Wireless appears to have been an early wireless networking company building access point management software. The port was likely used for communication between their management software and access point hardware — the kind of proprietary management protocol that vendors often register quietly without publishing any specification.

No RFC was ever written for it. No protocol documentation survives in any public form. The port name persists in IANA's registry the way a tombstone persists in a field — marking where something was, without explaining what it was.

What This Means in Practice

A registered-but-dormant port like 2411 has a predictable life:

Nothing legitimate uses it. The original software is gone. Any device or service binding to port 2411 today is doing so by coincidence, by custom configuration, or by malice.

Security tools flag it. Some threat databases list port 2411 alongside trojan activity — not because it was a famous malware port, but because generic malware sometimes binds to obscure registered ports exactly because they appear innocuous.²

It's fair game for internal use. Many developers and network engineers use dormant registered ports for internal services, game servers, custom daemons, and similar applications. If you see 2411 open on a machine, it almost certainly means something custom is running there.

What Range This Port Belongs To

The registered port range (1024–49151) was designed to give applications a stable, named port to listen on — distinct from the system ports (0–1023), which require root/administrator privileges to bind. Registration is voluntary and IANA doesn't revoke assignments even when companies disappear, which is why the registry contains hundreds of entries like this one: named, numbered, and effectively abandoned.

Checking What's Listening on Port 2411

If you see port 2411 active on a system and want to know what's using it:

On Linux/macOS:

# Show the process listening on TCP port 2411
ss -tlnp | grep 2411

# Or with lsof:
lsof -i TCP:2411

On Windows:

# Show process binding to port 2411
netstat -ano | findstr :2411

# Then look up the PID:
tasklist | findstr <PID>

With nmap (from another machine):

nmap -sV -p 2411 <target-ip>

The -sV flag attempts service version detection — it may identify whatever's actually running there, regardless of what the port number suggests.

Why Ghost Registrations Matter

Port 2411's situation is common. IANA's registry contains thousands of entries for services that no longer exist, companies that dissolved, and protocols that were never documented. These ghost registrations create a kind of quiet ambiguity in the port landscape: the number is "taken," but taken by no one.

This matters because the port number itself carries no enforcement. Nothing prevents someone from running any service on port 2411. The IANA registration is a courtesy record, not a lock. When the original registrant disappears, the port drifts back into the commons — in practice if not on paper.