Importantant Port Numbers for Networking Session II

A port number is the communication point between the computer and the computer network. All the information. The port number is backed up with TCP or UDP. The computer port number is defined in the transport layer of OSI reference model.

This is the continuation from the port numbers described in the previous post.

Important Port numbers 1

Port no:/ Protocol :::: Application

23/TCP,UDP ::::: Telnet protocol - unencrypted text communications Official

25/TCP,UDP :::: SMTP - used for e-mail routing between mailservers E-mails Official

26/TCP,UDP :::: RSFTP - A simple FTP-like protocol Unofficial

35/TCP,UDP ::::: QMS Magicolor 2 printer Unofficial

37/TCP,UDP ::::: TIME protocol Official

38/TCP,UDP ::::: Route Access Protocol Official

39/TCP,UDP :::: Resource Location Protocol Official

41/TCP,UDP ::::: Graphics Official

42/TCP,UDP ::::: Host Name Server Official

43/TCP ::::::WHOIS protocol Official

49/TCP,UDP ::::: TACACS Login Host protocol Official

53/TCP,UDP :::::: DNS (Domain Name System) Official

57/TCP :::::: MTP, Mail Transfer Protocol

67/UDP ::::::: BOOTP (BootStrap Protocol) server; also used by DHCP (Dynamic Host Configuration Protocol) Official

68/UDP :::::: BOOTP client; also used by DHCP Official

69/UDP :::::: TFTP (Trivial File Transfer Protocol) Official

70/TCP :::::: Gopher protocol Official 79/TCP Finger protocol Official

80/TCP :::::: HTTP (HyperText Transfer Protocol) - used for transferring web pages Official

81/TCP :::::: HTTP Alternate (HyperText Transfer Protocol) Official

81/TCP :::::: Torpark - Onion routing ORport Unofficial

82/UDP :::::::: Torpark - Control Port Unofficial

88/TCP ::::: Kerberos - authenticating agent Official

101/TCP ::::::: HOSTNAME 102/TCP ISO-TSAP protocol

107/TCP ::::::: Remote Telnet Service

109/TCP :::::: POP, Post Office Protocol, version 2

110/TCP ::::::: POP3 (Post Office Protocol version 3) - used for retrieving E-mails