tcp ip

tcp flow control

 What is TCP flow control Before discussing what TCP flow control is, we will describe what is flow control in computer networks.  When two hosts communicate with each other, one sends packets and other receives.  Both may have different hosting hardware, software design, and processing speed.  When the receiver is fast enough to process a …

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tcp keep alive

What is TCP Keepalive Before going into details of TCP keep alive.  We will have an overview of what is keepalive in general? Connection-oriented network protocols use keepalive technique, to check the health of a connection. Keepalive requires a periodic check over a connection when there is no data in either direction for a long …

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tcp sequence number

What is the TCP sequence number?  Before starting anything about the TCP sequence numbering mechanism, we must understand the two main functionalities of TCP protocol.  TCP is an example of a transport layer protocol as per the OSI model. TCP provides reliable and sequenced delivery of messages in each direction.  Reliable means no packet loss and sequence …

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what is sftp

What is SFTP? The full form of SFTP is the Secure file transfer protocol. It is also named as SSH FTP. SSH is for secure connection and FTP is for file transfer protocol. This clearly says that two protocols work together to transfer a file between two computers connected via an IP network.  According to …

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tcp three way handshake

 What is TCP three-way handshake?  We know that TCP is an example of the implementation of the transport layer protocol according to the OSI model. The protocol is connection-oriented, means before sending any data to the remote peer, TCP client set up a virtual connection over a packet-based underlying IP network.  The three-way handshake is the …

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