Port scanning is the technique administrators, and hackers use to identify the open ports and services available on a host. Hackers use this technique to find information that can be helpful to find flaws and exploit vulnerabilities, and administrators use this technique to verify the security policies of the network.
Following is a list of some most common Port Scanning Techniques :
* Ping Scan
* TCP Half-Open
* TCP Connect
* UDP
* Stealth Scanning
