Port 1361 belongs to the registered port range (1024-49151), where services can reserve a number through IANA. Unlike well-known ports (0-1023) that require special privileges, registered ports are available to user-level processes and applications.
This port is officially assigned to a service called LinX.
What Is LinX?
According to the IANA registry, port 1361 is assigned to "LinX" for both TCP and UDP protocols.1 The registration was made by Steffen Schilke in the late 1990s.
Beyond that? Almost nothing. No RFC defines it. No active software uses it. No modern documentation explains what it was supposed to do.
LinX appears to be one of thousands of services that were registered during the Internet's rapid expansion in the 1990s but never achieved widespread adoption. The port was claimed, the number was allocated, and then the service faded into obscurity.
The Registered Range
Ports 1024-49151 are the registered range. Any organization or developer can request a port assignment from IANA for their service. You don't need special permission to use these ports—you just need to ask IANA to record your claim.
This seemed like a good system in the 1990s when the Internet was smaller and more organized. Register your port, build your service, and everyone would know where to find it.
But the Internet grew faster than anyone anticipated. Services came and went. Companies folded. Protocols were replaced. Many registered ports—like 1361—now point to services that no longer exist.
What Actually Runs on Port 1361?
Today? Probably nothing.
You can check what's listening on this port on your system:
On Linux or macOS:
On Windows:
Most likely you'll find nothing. Port 1361 is registered but unused—claimed decades ago for a service that never became part of the Internet's infrastructure.
Why Unused Ports Matter
Port 1361 represents something important: the gap between allocation and adoption.
Just because a port is registered doesn't mean anyone actually uses it. Just because a protocol was designed doesn't mean it survived. The port registry is full of ghosts—services that were real enough to register a number but not successful enough to matter.
This isn't a failure. It's archaeology. These abandoned ports show us what people tried to build, what seemed important at the time, what didn't work out.
Port 1361 was allocated with hope. Someone believed LinX would be significant enough to need a permanent address. They were wrong—or at least, the Internet moved in a different direction.
But the port remains. A marker in the registry. A reminder that the Internet you see today is built on top of countless experiments that didn't make it.
Frequently Asked Questions About Port 1361
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