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Transmission Control Protocol accepts data from a data stream, divides it into chunks, and adds a TCP header creating a TCP segment. The TCP segment is then encapsulated into an Internet Protocol (IP) datagram, and exchanged with peers.
This lesson explains the different fields of the TCP header like the source, and destination ports. The sequence and acknowledgment numbers, and more.
A TCP header follows the IP headers, supplying information specific to TCP. This division allows for the existence of host-level protocols other than TCP. In the early development of the Internet suite of protocols, the IP header fields had been a part of TCP. ¶
The TCP header helps keep track of the communication state between two TCP endpoints, which are identified by their IP addresses and port numbers. TCP header plays a vital role in flow control, error control, congestion control, and security.
A TCP segment consists of data bytes to be sent and a header that is added to the data by TCP as shown: The header of a TCP segment can range from 20-60 bytes. 40 bytes are for options. If there are no options, a header is 20 bytes else it can be of upmost 60 bytes.
TCP - Header. The header of a TCP segment is composed of the following fields: A summary of these fields follows: Source port: this is a 16 bit field that specifies the port number of the sender. Destination port: this is a 16 bit field that specifies the port number of the receiver.
The TCP/IP packet’s header and payload are its two main components. The header in this instance is largely responsible for storing all the important information, such as the port number, source, destination, etc.
Ever wondered how data travels seamlessly over the internet? TCP headers play a crucial role in ensuring every piece of information reaches its destination intact. Learn about TCP header size, structure, checksum mechanism, and more in our latest article!
Understanding the construction and functionality of TCP (Transmission Control Protocol) headers is crucial for anyone involved in network engineering, cybersecurity, or IT infrastructure. Each field within the TCP header plays a specific role in data transmission.
A TCP header follows the internet header, supplying information specific to the TCP protocol. This division allows for the existence of host level protocols other than TCP.