Certification Training: A+ Common Port Numbers

FTP        port 21
SSH       port 22
SMTP    port 25
HTTP    port 80
POP3     port 110
HTTPS  port 443

Tip: Do your best to memorize the ports because you will be tested on them. Memorize them both forward and backward. Study these right before the exam and jot them down as soon as you get your dry erase board at the testing center.  Knowing the ports quickly will save you a fair amount of time on the test itself.

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