> ## Documentation Index
> Fetch the complete documentation index at: https://docs.catops.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Network

> Monitor network connections and listening ports

Hub provides visibility into your server's network activity, including active connections and listening ports.

## Listening Ports

See all ports your server is listening on:

| Column   | Description                             |
| -------- | --------------------------------------- |
| Port     | Port number                             |
| Protocol | TCP / UDP                               |
| Process  | Process name using the port             |
| PID      | Process ID                              |
| Address  | Bind address (0.0.0.0, 127.0.0.1, etc.) |

## Active Connections

View established network connections:

| Column  | Description                                      |
| ------- | ------------------------------------------------ |
| Local   | Local address:port                               |
| Remote  | Remote address:port                              |
| State   | Connection state (ESTABLISHED, TIME\_WAIT, etc.) |
| Process | Process name                                     |
| PID     | Process ID                                       |

## Connection States

| State       | Meaning                 |
| ----------- | ----------------------- |
| LISTEN      | Waiting for connections |
| ESTABLISHED | Active connection       |
| TIME\_WAIT  | Connection closing      |
| CLOSE\_WAIT | Remote side closed      |

## Use Cases

* **Security Audit** - Check what ports are exposed
* **Debugging** - Find which process is using a port
* **Monitoring** - Track active connections to your services