How to perform a telnet on different operating systems Print

Windows:

1. Click Start | Run...
2. Type cmd and press Enter
3. In the box type telnet yourdomain.com port# (i.e. telnet Gesatech.com 3306)
4. Press Enter

Note: Windows 7 and Windows Vista have telnet disabled by default, Please see video tutorial to enable telnet in Windows 7 or Windows Vista.

Mac, Linux, Unix

1. Open up Terminal
2. Type telnet yourdomain.com port# (i.e. telnet gesatech.com 3306)
3. Press Return or Enter

Telnet is useful for troubleshooting MySQL (port 3306), FTP (port 21), email (port 110, port 25, port 26) to see if a firewall or other internet security software (e.g., anti-virus like Norton, McAfee) is blocking a particular port.

Another useful link is at http://www.gesatech.com/cgi-bin/firewall where a broken image (globe) is indicative that the port is being blocked. If you have missing images, please contact your network administrator.