Question: what port is associated with the dns service
Answer: cation Protocol ( RLP ) -- used for determining the location of higher level services from hosts on a network Official 40 Reserved Reserved Unassigned Official 42 TCP UDP Host Name Server Protocol Official 43 TCP UDP WHOIS protocol Official 49 TCP UDP TACACS+ Login Host protocol Official 50 TCP UDP Remote Mail Checking Protocol Official 51 Reserved Official 51 TCP UDP Previously Interface Message Processor logical address management Unofficial 52 TCP UDP Xerox Network Systems ( XNS ) Time Protocol Official 53 TCP UDP Domain Name System ( DNS ) Official 54 TCP UDP Xerox Network Systems ( XNS ) clearinghouse Official 56 TCP UDP Xerox Network Systems ( XNS ) authentication Official 57 TCP UDP Any private terminal access Official 58 TCP UDP Xerox Network Systems ( XNS ) Mail Official 67 Assigned UDP Bootstrap Protocol ( BOOTP ) server ; also used by Dynamic Host Configuration Protocol ( DHCP ) Official 68 Assigned UDP Bootstrap Protocol ( BOOTP ) client ; also used by Dynamic Host Configuration Protocol ( DHCP ) Off