What is protocol and port number

           Protocol


Protocol: It is a set of rule  which defining a standard way exchanging information over the network.  

Port number: A port number is logical channel  button two devices which help in their communication a port is user to translator 

                    Total port = 65536

                    Well known Port= 1023

                      Register Port= 1024----4915

                       Dynamic and Private Port= 49152/65535  


    Protocol Name

Port Number

Transport  Layer 

  1. FTP(File Transfer System)

21

TCP/UDP

  1. SSH(Secure Shell)

22

TCP

  1. ECHO

7

TCP/UDP

  1. FTTP(File Transfer Protocol Secure)

990

TCP

  1. Telnet

23

TCP

  1. Telnets

992

TCP

  1. SMTP(Simple Mail Transfer Protocol) 

25

TCP

  1. DNS(Domain Name System)

53

UDP

  1. DHCP(Dynamic Host Configuration Protocol) 

67/68

UDP/TCP

  1. TFTP(Tribil File Transfer Protocol)

69

UDP/TCP

  1. HTTP(Hyper text Transfer protocol )

80

TCP

  1. POP

110

TCP

  1. NTP(Network Time Protocol)

123

UDP/TCP

  1. HTTPS(Hyper Text Transfer Protocol secure)

443

TCP

  1. RIP(Routing Information Protocol)

520

UDP/TCP

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