Network+ / CCNA Certification Exam Tutorial: Port Numbers And Troubleshooting

Network +, and many ccna pass the test requires you to know the port number, but they are important to know the actual - the world to operate a network. Before we discuss the reasons, this is a partial list is important to know the port number of these certification exams:
ports 20, 21 (File Transfer Protocol) is used. Secure Shell is used by 22
port (Sh). 25 is used for the 23
port telnet.
port using the simple mail transfer protocol (smtp).
port is used by 53 of 69 minor dns.
port using File Transfer Protocol (tftp). 80 is used by 110
port http.
port using 143 is 443 is used by the security pop3.
port imap.
port use http (). You have to face such a list
when tempted to ask ourselves is jeokdeulyeoksi: " other than to pass the exam, do I really need to know the number of these ports? The answer is yes & 39; "
the & 39;. We solved many problems in this business, and that part is a professional problem solver when we think things are how they are functioning correctly. That way, when things do go wrong, and you take a structured approach to suit said. Fixed them.
let You say things like that in the middle of network monitoring console to work comfortably. Your visit is a consulting company to install a new firewall. Working with your phone while they sent off - all of a sudden the user to send and receive e-mail from outside the office. Sueopseup. In this situation, the first thing you ask yourself: What is now broken
" What has changed since I was working? & Quot;
in in this case, is to install a firewall - But do you know why it has to stop email ? You know, port 25 (), 110 (3) and 143 (imap) must be blocked by a firewall? If you already know how to fix problem.
i speak from personal experience is the key to learning the world& 39;s suit - a class on the basics of a network troubleshooter, and I know the port number includes general The. And if you are good, and on top of the network troubleshooter comptia ccna +, and network authentication, you will always be in demand - and it is where I want to be! Bryant
chris owner Bryant advantage ccie silver 12933, home to more than 100 certification exam is free tutorials, and ccna ccnp tutorial. Comptia Network +, Security +, and + certified to use the tutorials. Suit! Central Authentication and subscriptions
visit his blog, Daily newsletter filled ccna, Network +, Security + +, testing and certification practice ccnp question! 7 for free - some of the courses, how to pass " ccna & quot;, available.
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