How to start

Port invader is easy to use yet very powerfull.

Scanning Local
There are two methods to scanning your local computer. The first and fastest way to scan you local machine is to press the "Scan Local" button. This method trys to open all ports that you specify and if there is an error, the port is already open. This means the scanning method is several times faster since it does not have connect to each port.

The second method is to actually put your IP in the starting IP text box. Leave the ending IP text box blank. This will scan you computer for the ports you specify, connecting to each port one at a time.

To scan a range of IP Addresses
Enter the starting IP address (EX. 192.168.0.1) and enter the Ending IP Address (EX. 192.169.1.1). Enter the starting Port and the ending Port and press "Start Scan".

To scan a list of IP Addresses
Check "Use Custom List" box and enter an IP in the "IP Adress:" box. Press add to list. The IP Address should be inserted into the List Box on the left. Enter as many addresses as you wish to scan. Enter the starting and finishing ports and press "Start Scan".