Unveiling Linux: A Guide to Listing All Open Ports on Your System

To list all open ports in Linux, you can use various commands such as netstat, ss, or lsof. Here are the steps using the netstat command:

Open a terminal on your Linux system. You can typically find the terminal application in the system's applications or by using the keyboard shortcut Ctrl+Alt+T.
In the terminal, type the following command and press Enter:
```
netstat -tuln
```
The -t option displays TCP ports, the -u option shows UDP ports, the -l option lists listening ports, and the -n option displays port numbers in numerical form.
The command will output a list of open ports, along with their associated IP addresses and protocols (TCP or UDP).

Alternatively, you can use the ss command, which is a modern replacement for netstat. The command is similar:


ss -tuln

Or you can use the lsof command to list open files, including network sockets:


sudo lsof -i

This will display a list of open ports and the corresponding processes.

Remember that listing open ports may require administrative privileges, so you may need to use sudo before the commands if you're not already logged in as the root user.

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