O'Reilly logo

Kali Linux Network Scanning Cookbook by Justin Hutchens

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

TCP port scanning

Throughout this chapter, several different approaches to TCP scanning will be addressed. These techniques include stealth scanning, connect scanning, and zombie scanning. To understand how these scanning techniques work, it is important to understand how TCP connections are established and maintained. TCP is a connection-oriented protocol, and data is only transported over TCP after a connection has been established between two systems. The process associated with establishing a TCP connection is often referred to as the three-way handshake. This name alludes to the three steps involved in the connection process. The following diagram illustrates this process in a graphical form:

A TCP SYN packet is sent from the device that ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required