PORT NUMBER - www.studyandupdates.com

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PORT NUMBER

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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