DHCP and 3 Way-handshake

DHCP: Dynamic Host Configuration Protocol

·         It will assign IP address dynamically to the clients

·         It will works on DORA process

·         Port numbers are 67 – for client, 68 – for server

·         DORA – Discover Offer Request Acknowledgment

DHCP will Assignes:

•        IP Address
•        Subnet Mask
•        Default Gateway
•        DNS 1
•        DNS  

TCP - 3 Way Hand Shake:

This is also called as call setup for TCP connection Establishment

TCP – 3 Way Handshake is used in Establishing all TCP connections. The important thing here in this is each packet i.e (SYN, SYN+ACK, ACK)

To establish a connection:

            TCP use a 3 Way Handshake before a client attempts to connect with a server. the server must bind to a port to open. It takes up for connection

·         This is called Passive Open

·         Once a Passive open is established client may initiate a active open to a 3 Way Handshake