Internet UDP port 68 is primarily used by the Dynamic Host Configuration Protocol (DHCP). DHCP is a network management protocol used on Internet Protocol (IP) networks, where a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on the network, so they can communicate with other IP networks. DHCP operates on a client-server model. In this model, the DHCP client uses UDP port 68 to communicate with the DHCP server.
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