How to Check Which Ports Are Open on a Server?
Open ports on a server are fundamental to security and operational functionality. If you want to know which ports are open on your server, you’ll need to follow a few simple steps. In this article, we’ll tell you about various ways to check open ports.
1. Using the netstat Command
The first way to check open ports on a server is to use the netstat command. This command allows you to view all open ports on the server in real time. To execute this command, you need to open a terminal and enter the following command:
netstat -tuln
After executing this command, you will see a list of all open ports on your server, as well as information about which processes are using these ports.
2. Using the nmap Utility
The second way to check open ports on a server is to use the nmap utility. This utility allows you to scan ports on a remote server and identify their status.
To use the nmap utility, you need to open a terminal and enter the following command:
nmap -p 1-65535 localhost
After executing this command, you will get a list of all open ports on your server, as well as information about which services are using these ports.
3. Using Online Services
The third way to check open ports on a server is to use online services. There are many online tools that allow you to scan ports on remote servers and get detailed information about them.
The advantage of using online services is that they provide more detailed information about ports and services than ordinary utilities.
Conclusion
In this article, we have reviewed three main ways to check open ports on a server. Use these methods to ensure the security and stability of your server.
Remember that regularly checking open ports is an important part of maintaining the security of your server. Be vigilant and monitor the status of ports on your server.
