DHCP

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DHCP is Dynamic Host Configuration Protocol, defined in RFC 1541. It is used to assign IP numbers dynamically.

Identification

Ports

DHCP messages from a client to a server are sent to UDP port 67, and from a server to a client are sent to UDP port 68.

l7-filter

l7-filter uses the dhcp pattern. This is lightly tested.

^(\x01|\x02)[\x01- ]\x06.*c\x82sc

See also