In this tutorial, we will learn how to find the port number of a web server. The port number is an important piece of information that allows us to establish a connection with a specific service running on the server.
Using Command Prompt (Windows)
If you’re using Windows, you can follow these steps to find the port number:
- Open the Command Prompt by pressing Win + R and then typing cmd.
- Type netstat -ano and press Enter.
- A list of active connections will be displayed. Look for the entry with your web server’s IP address or domain name.
- The port number will be mentioned in the “Local Address” column next to your web server’s IP address or domain name.
If there are multiple entries for your web server, it means that it is listening on multiple ports. Take note of the desired port number for your application.
Using Terminal (Mac/Linux)
If you’re using a Mac or Linux operating system, you can use the Terminal to find the port number:
- Open Terminal by navigating to Applications -> Utilities -> Terminal.
- Type sudo lsof -i :80, replacing “:80” with the desired port number if different, and press Enter.
- The system will prompt you to enter your password. Enter it and press Enter again.
- The results will display information about any processes running on that specific port, including the Process ID (PID) and name.
If you encounter any issues while finding the port number, make sure you have the correct IP address or domain name of the web server. Additionally, ensure that the server is running and accessible.
If you’re behind a router or firewall, it’s possible that the port you’re trying to access is blocked. You may need to configure port forwarding or consult your network administrator for assistance.
Knowing how to find the port number of a web server is essential when configuring network connections or troubleshooting connectivity issues. By following the steps outlined in this tutorial, you can easily identify the port number and establish connections with specific services running on the server.