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Home/ Questions/Q 5361
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Vipin Chauhan
Vipin ChauhanLevel 30
Asked: March 30, 20222022-03-30T00:19:41+05:30 2022-03-30T00:19:41+05:30

What Protocol Uses Port Numbers 67 And 68?

What Protocol Uses Port Numbers 67 And 68?
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    1. Farwa Khalid Bronze
      2022-05-26T14:10:02+05:30Added an answer on May 26, 2022 at 2:10 pm

      What Protocol Uses Port Numbers 67 And 68?

      Answer:

      The Dynamic Host Configuration Protocol uses port numbers 67 and 68. Port number 67 is specific for the destination server and port number 68 is used for the client. Dynamic host configuration protocol is used to configure the internet protocol networks. The DHCP destination server listens to the UDP port number 67 and programmatically assigns the IP addresses. The other network parameters in the DHCP protocol are the clients they will respond to on UDP port number 68.

      Dynamic host configuration protocol:

      DHCP assigns IP addresses to devices on the network. The server sends an address to the clients and assigns the IP address for a certain period of time in which they want to use it.

      The dynamic host configuration host protocol has four steps as follows,

      • Discovery:

      The DHCP clients send a transmission to the whole network asking for an internet protocol address.

      • Offer:

      On the network, the DHCP server responds to the request. The server transmits the offer to the whole network. This process makes sure that another DHCP server has already taken the request.

      • Request:

      The clients send the request to the responding DHCP server and ask for an IP and configuration.

      • Reply:

      The dynamic host server replies to the request and assigns the IP address and the configuration to the clients. The response time also contains the contract time of the IP address. After the contract time is over the clients need to send another request for the IP address and the configuration.

      DHCP runs over the UDP. The host connected to the network provides an automatic configuration. Port 68 is used by the DHCP client because the packets sent through this port are blocked by the administrator.  UDP is a connectionless protocol, that does not shake until the information is transferred between the devices. The speed of work means when you have multiple clients on the network it automatically receives the IP address in no time when connect to the networks.

      The packets sent over port number 67 are filtered by routers, so they will not block by the network administrator. The packets sent over port 67 are network-oriented and if the router received the packets, it assumes that a connection is built between two devices.

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