As you know from taking my classes, computers prefer numbers and humans prefer letters or words. Port numbers are numerical placeholders for protocol names. The best way to learn them is through daily professional use, or memorization. Flash cards can be helpful if you are preparing for an exam that is heavy in ports and protocols, such as the CompTIA A+ or Network+.
Here is another study aid provided by Rich Muldoon. Click on the image to enlarge to full size and zoom in.
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About the Author:
I am a cybersecurity and IT instructor, cybersecurity analyst, pen-tester, trainer, and speaker. I am an owner of the WyzCo Group Inc. In addition to consulting on security products and services, I also conduct security audits, compliance audits, vulnerability assessments and penetration tests. I also teach Cybersecurity Awareness Training classes. I work as an information technology and cybersecurity instructor for several training and certification organizations. I have worked in corporate, military, government, and workforce development training environments I am a frequent speaker at professional conferences such as the Minnesota Bloggers Conference, Secure360 Security Conference in 2016, 2017, 2018, 2019, the (ISC)2 World Congress 2016, and the ISSA International Conference 2017, and many local community organizations, including Chambers of Commerce, SCORE, and several school districts. I have been blogging on cybersecurity since 2006 at http://wyzguyscybersecurity.com