CompTIA Network+ Performance-based Tests - port numbers

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Today I will show you two performance-based questions in the CompTIA Network+ Test. They test you the basic well-known port numbers and their applications.
Playlists:
Topology & cabling, & physical cabling structure:
www.youtube.com/watch?v=T5xQJ...
Ethernet Basics:
www.youtube.com/watch?v=FkH_J...
IPv4 Basics:
• Tricks to five classes...
OSI Model and related:
• OSI Model

[@justcurious1940]

1 of the best channels and 1 of the best teachers out there.

[@imjoshwa]

Sunny, you're a beautiful human. Thanks for all the help

[@zyzzuschrist3410]

Keep these coming Sunny

[@thrillerjames01]

Thank you for taking the time to teach.

[@nigelbarnes7904]

I wish you just make a course covering all of the subjects relevant to the major certifications, like Network + and Security +. You're a great teacher, explain concepts so well. I would buy the courses, no questions asked.

[@dinorossi6611]

Him and Paul Browning are the best

[@yaredmekonnen3163]

@@dinorossi6611 Exactly! They're the best! I'm using them as a prep for the test.

[@pavelkarvutev8051]

Awesome teacher!

[@GregFries]

Thanks Sunny. People say Net+ is "entry level" I feel it is actually rather comprehensive.

[@neilslattery9944]

As someone who's doing Network+ now, I totally agree with this.

[@JimmyRussle]

in comparison with CCNA it is, but yeah, there is a lot to it. Not easy at all if you are starting from scratch with no relevant experience. If you don't take it seriously, you will absolutely not pass the exam.

[@ibn-mohamad]

Nice explaining

[@jiilaal]

thanks teacher.

[@adnanabdoualmohamad4838]

Could you please describe HS Codes in a video

[@kcchim8655]

Hello sunny, we need more questions especially on the networking scenarios =)

[@narimilakshminarayana3345]

❤️

[@fmih]

Shouldn't port 22 be SSH?

[@macky1660]

My best guess to why it's the same as SSH, is that you will most likely use SCP in a SSH session

[@glengedda1000]

HOW ABOUT VIDEOS ON CYBERSECURITY AND pentesting.

[@irx0r]

you cannot do thats stuff without knowing this Service and Port program knowledge

[@imagineultra919]

I thought port 22 was SSH?!?

[@cokeforever]

so basically, you just list historical port numbers for some test program?! not on par with your usual comprehensive teaching vids... dislike; p.s. who nowadays uses historical/default port numbers?

[@baldilocksmcfedders6335]

What are the replacements for HTTPS and SSH? Imma pretty new to port numbers and want to make sure I use the right ones. Thank you.

[@cokeforever]

@@baldilocksmcfedders6335 port numbers are arbitrary values, you can assign any port number to be your SSH port, say 2222, or 62222 or whatever free port number you have; in fact it is wiser to use non standard port number for ssh as network scanners love to knock on default ports, and it takes only 1 itteration to check whether ssh server is listening to port 22, but if u use non standard port number, they will have to scan 65535 ports or rather just mark your system as no ssh on 22, since in the same computing time they can scan either 65535 ports on one machine or one port on 65535 machines...

[@baldilocksmcfedders6335]

@@cokeforever Following that and thank you. How would a client know that YT is expecting their connection on port 12345 instead of 443 or that LDAP should be on port 34567 instead of 636. My understanding is that there has to be some sort of standard for at least the initial connection. After the initial connection would YT tell the client to use a different port?

[@cokeforever]

@@baldilocksmcfedders6335 you should familiarize with the basics of TCP/IP. In short an incoming connection hits routing logics (e.g. IPTABLES), the entirety of internal routing is defined by it. Try to simplify your understanding to bare structure, for instance one can write a program (or set of iptables rules) that would listen to packets on ports 80, 445, 2323 etc. - this logic can then either forward packets to some other software or null or immitate a protocol, depending on the result we want. For instance, on one of machines I run sshd on port 2278, but also fake ssh-immitation on 22 and 2222, this one has just one purpose: to spend scanner's time in the most bizzare way. p.s. also, have a look at dns records A and MX for a clue how it is done on larger scale. You are most welcome)

[@kcchim8655]

Jesus, read the topic of this video, it's for CompTIA Network+, the exam's objective covers it, so why not make a video about it