WARNING: This site is intended for online use only; mass-downloading of pages degrades the server and is prohibited.
If you attempt to use tools to mass-download the site, you may be blocked permanently by automated software.
If you want to read this CertiGuide offline, please use one of the links on the left to purchase a convenient PDF copy. Thank you.

Get this Net+ CertiGuide for your own computer.
Click Here!
Use coupon code "certiguide" to save 20%!
(Expires 2004/12/31)

NEW! Network+ N11-003 2005 Beta Exam Study Guide - Just $9!
Get It Here!

Google
Web CertiGuide






Table Of Contents  CertiGuide to Network+
 9  Chapter 0101:  TCP/IP

Previous Topic/Section
IP Default Gateway
Previous Page
Pages in Current Topic/Section
1
2
Next Page
 VIII  Services and Applications
Next Topic/Section

VII  Ports
(Page 2 of 2)

Well Known Services and Ports

The chart below highlights some of the most important “well known services” (protocols) and the ports at which to find them. There are many more TCP/IP application protocols available, to serve different specialized purposes. For example, database servers, remote server logins, and even graphical user interfaces used on machines in a TCP/IP network have been assigned their own port numbers (these are beyond the scope of what’s required for Network+, which only requires that you be familiar with the most common port numbers and services).

PORTS

Expect to be tested on the popular well-known port numbers. The most common numbers and their associated service are listed here.

Placing the protocols in their respective layers will help you remember what protocol and port is for what type of communication.


Table 8: Protocol Ports

Acronym

Port

Protocol Name

FTP

21

File Transfer Protocol

TFTP

69

Trivial File Transfer Protocol

HTTP

80

HyperText Transfer Protocol for the World Wide Web (WWW)

POP3

110

Post Office Protocol Version 3

IMAP4

143

Internet Message Access Protocol Version 4

SMTP

25

Simple Mail Transfer Protocol

NNTP

119

Network News Transfer Protocol

NTP

123

Network Time Protocol

Telnet

23

Telnet

DNS

53

Domain Name System

Previous Topic/Section
IP Default Gateway
Previous Page
Pages in Current Topic/Section
1
2
Next Page
 VIII  Services and Applications
Next Topic/Section

If you find CertiGuide.com useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider buying an inexpensive PDF equivalent of the CertiGuide to Network+ from StudyExam4Less.com. (Use coupon code "certiguide" by December 31, 2004 to save 20%!) Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $


Home - Table Of Contents - Contact Us

CertiGuide for Network+ (http://www.CertiGuide.com/netplus/) on CertiGuide.com
Version 1.0 - Version Date: November 7, 2004

Adapted with permission from a work created by Tcat Houser and Helen O’Boyle.
CertiGuide.com Version © Copyright 2004 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.