Port Scanner
This Port Scanner is about as fast as they come and is an excellent way to help secure your network!
Perform a Port Scan
In order to use our port scanner, you'll need to enter your ip address on this firewall test page. If this was the first page you visited on our website, then please visit the page above, agree to the terms and you will be able to start your security scan.
What is a port scanner and why would you want to use one?
An online port scanner will scan your computer looking for open ports. Programs use ports (like we use doors) to visit and communicate with the outside world (the net).
Unlike us humans, computers have not one door, but over 65,000 doors! Programs make use of these ports and often leave them wide open. Viruses now have built in port scanners that scour the internet looking for unsuspecting computers with open ports; when they find them, they cripple your software or worse, stay hidden and report your personal activity and information to another system.
By monitoring the ports on your computer, you can be alerted when changes are made. A program should never open a port and leave it open on your computer without your knowledge!
Port Scanning
The only way to track open ports is by using a port scanner, and the most accurate port scanner will be an online port scan. Scanning your ports using software like nmap will work fine, but it will not test your firewall's ability to block port activity.
You need a port scanner that is not inside your network to verify accuracy. Our free online port scanner will help you do just that, but before we can scan your ports, we'll need you to verify that you are authorized to initiate the security scan.
Port Scan
Why do we require this information before scanning your computer? It helps prevent mistakes; for example, it prevents an employee of company x from initiating a port scan that could be otherwise be viewed as hostile port scanning by system administrators.
If you are visiting our site from your company's internet connection, please make sure your network administrator or network security manager has authorized you to do so.