Unlock basics of a TCP/IP packet

Basics of a TCP/IP

For a cyber security professional or a networking professional after learning about a lot of fundamentals, comes the real need to understand TCP/IP, we know a lot of information available over the internet about this, also we know there are hundreds of videos exist to understand OSI model, don’t want to repeat that, however, want to save your time in doing the research for accurate information.

TCP and IP are different protocols, TCP handles the data transmission and IP handles the addressing.

Here is an excellent article beautifully explaining the concepts with the help of Wireshark.

the below is worth memorizing.


What is the authentic document to understand TCP/IP? definitely, the RFC is given below

TCP https://www.ietf.org/rfc/rfc793.txt

IP https://www.rfc-editor.org/rfc/rfc791

Here below is a good start


Also Please check “check api url