Establishes that the destination de

Establishes that the destination device is present on the network Verifies that the destination device has an active service and is accepting requests on the destination port number that the initiating client intends to use for the session Informs the destination device that the source client intends to establish a communication session on that port number
In TCP connections, the host client establishes the connection with the server. The three steps in TCP connection establishment, shown in Figure 7-20, are Step
1. The initiating client requests a client-to-server communication session with the server. Step
2. The server acknowledges the client-to-server communication session and requests a server-to-client communication session. Step
3. The initiating client acknowledges the server-to-client communication session.