Port 1122 was officially registered with IANA for availant-mgr (Availant Manager), an enterprise availability management product that monitored system health and uptime. The company that made it, Availant, was acquired by LakeView Technology in 2003.1 The product is long discontinued.
The port remains in the IANA registry. The service does not.
What Range This Port Belongs To
Port 1122 sits in the registered ports range (1024-49151).2 These ports are assigned by IANA but not reserved for system services like the well-known ports (0-1023) are. Anyone can request a registered port for their application, protocol, or service. IANA tracks the assignments to prevent conflicts.
The registration doesn't guarantee the port will actually be used. It just means someone asked for it, IANA said yes, and now it's in the database forever—or until someone formally releases it.
What Availant Manager Was
Availant Manager was a browser-based availability management platform that used standard Internet protocols (HTTP, XML) to monitor enterprise systems.3 It was designed to be platform-independent and integrate with existing network management tools.
It's unclear whether the service actually ran on port 1122, or whether the port was reserved for future use that never materialized. The company disappeared before the product became widespread.
Why Ghost Ports Matter
The registered port range is full of entries like this—services that once needed a permanent address, got one, and then vanished when the company folded, the product was discontinued, or the protocol was superseded.
Port numbers don't expire. Once assigned, they stay in the registry indefinitely. This creates a strange archaeology: you can read through the IANA port list and see the history of networking through the services that were important enough to need a port but not important enough to survive.
Port 1122 is a tombstone. It marks where something used to be.
Checking What's Actually Listening
Just because a port is registered for a specific service doesn't mean that's what's actually using it. On your system, anything could be listening on port 1122.
To check what's actually there:
On Linux or macOS:
On Windows:
If something responds, it's probably not Availant Manager. That service is gone. Whatever's there now is either a different application that happens to use the same port, or something unofficial that picked 1122 because it was available.
Security Note
Some historical reports associate port 1122 with malware on older Windows systems.4 This doesn't mean the port itself is dangerous—it means malicious software occasionally chose this port because it was registered but unused. The same could be said for hundreds of other abandoned registered ports.
If you see unexpected traffic on port 1122, investigate. But don't assume it's malicious just because of the port number.
The Point
Port 1122 reminds us that the Internet has a long memory. Services disappear. Companies get acquired. Products get discontinued. But the port numbers stay in the registry, fossils of protocols that once seemed important enough to deserve a permanent address.
The registered port range isn't just a technical directory. It's a graveyard of good intentions.
此页面对您有帮助吗？