PORT NUMBER
What is the range of port Number?
Well known Ports – 0 to 1023
Registered Ports-1024 to 49151
Open Poerts-49152 to 65535
What is a Protocol Number and give some examples?
The protocol number is a single byte in the third word of the datagram header. The value identifies
the protocol in the layer above IP to which the data should be passed.
Protocol Protocol Number
▪ ICMP--------------------1
▪ IGMP--------------------2
▪ IPV4---------------------4
▪ TCP----------------------6
▪ EGP----------------------8
▪ IGP-----------------------9
▪ UDP---------------------17
▪ IPV6---------------------41
▪ GRE---------------------47
▪ EIGRP-------------------88
▪ OSPF--------------------89
▪ BGP---------------------179
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