- \n
- Open Command Prompt:\n
- \n
- Press Windows + R, type cmd, and press Enter.
\n![\"cmd\"](\"https:\/\/www.webhosting.uk.com\/kb\/wp-content\/uploads\/2025\/04\/Snag_79941f83.png\")
<\/a><\/li>\n- Alternatively, you can search for Command Prompt in the Start Menu and run it as Administrator (Right-click ? Run as administrator).<\/li>\n<\/ol>\n<\/li>\n
- Check for open ports using netstat:
\nUse the netstat command with suitable flags to view open ports:<\/p>\nnetstat -an | find \u201cLISTEN\u201d<\/pre>\n
Explanation:<\/p>\n
- \n
- netstat: Shows network connections and listening ports.<\/li>\n
- -a: Displays all connections and listening ports.<\/li>\n
- -n: Displays addresses and port numbers in numeric form.<\/li>\n
- find \u201cLISTEN\u201d: Filters the output to show only listening ports.
\nYou\u2019ll see output like:<\/p>\n\u00a0 TCP\u00a0\u00a0\u00a0 0.0.0.0:80\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0:0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 LISTENING\r\n TCP\u00a0\u00a0\u00a0 127.0.0.1:3306\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0:0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 LISTENING<\/pre>\n
This means ports 80 and 3306 are open and listening.<\/li>\n<\/ul>\n<\/li>\n
- Find the application using the Port\n
- \n
- To classify which application is using a specific port, use:\n
netstat -aon | findstr :<port_number><\/pre>\n
For example:<\/p>\n
netstat -aon | findstr :80<\/pre>\n<\/li>\n
- The output will show a PID (Process ID). To find the application:\n
tasklist \/FI \u201cPID eq <pid_number>\u201d<\/pre>\n
Example:<\/p>\n
tasklist \/FI \u201cPID eq 1234\u201d<\/pre>\n
This will display the process using that port.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
Optional: Use PowerShell Alternative<\/strong>
\nYou can also use PowerShell with this command:<\/p>\nGet-NetTCPConnection | Where-Object {$_.State -eq \u201cListen\u201d}<\/pre>\nUseful Tip:
\nIf you doubt a firewall is blocking a port, ensure it is allowed through Windows Defender Firewall:<\/p>\n- \n
- Go to Control Panel > Windows Defender Firewall > Advanced Settings.<\/li>\n
- Create an Inbound Rule for the specific port if required.<\/li>\n<\/ul>\nManaging ports and network services on Windows?<\/strong>
\nFor greater control and flexibility, consider using a Windows VPS <\/a>Hosting solution with administrator access.<\/div>\nIf you need help examining open ports or troubleshooting network issues, feel free to reach out to our support team.<\/p>\n
Complete your Linux network setup! Check out How to add additional SMTP ports<\/a><\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
In this article, you will find how to check open ports using command prompt. Checking open ports on your Windows system can help recognize network issues, test firewall configurations, and…<\/p>\n
- To classify which application is using a specific port, use:\n
- Press Windows + R, type cmd, and press Enter.