Thursday, December 12, 2024
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NETWORK ADMINISTRATIONSsnmp

The Top 15 Network Protocols and Ports Explained // FTP, SSH, DNS, DHCP, HTTP, SMTP, TCP/IP

If you are learning networking, these are the top protocols and port numbers you will NEED to know. Good for the CCNA, Net+, Sec+, CEH, Pentest+, or that pesky interview you need to ace.

Download the pcap here and follow right along:
https://packetpioneer.com/wp-content/uploads/chrisgreer-protocols-and-ports.zip

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Thank you to https://wiki.wireshark.org/SampleCaptures and Johannes Weber for the pcap samples that I was not able to create on my own!

For professional inquiries please contact me at packetpioneer@gmail.com

source

by Chris Greer

simple network management protocol

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45 thoughts on “The Top 15 Network Protocols and Ports Explained // FTP, SSH, DNS, DHCP, HTTP, SMTP, TCP/IP”

  • Can't wait to watch this video in full after work today!! Some of the best cyber security/networking content on YouTube!

  • Chris, you're the man! Thank you so much for sharing all of you knowledge, I continue to learn so much from you and I am so grateful!

  • it's been a week since i'm gathering through your video, those video are so helpful for my understanding of the network. Thank you for the time that you spent creating and editing those video.

    sincerely

  • Superb!! Why doesn't the teacher teach me like this 😂

  • pretty easy, straightforward stuff; learned all this in the 90s and thankfully have retained most of it. Thank you for the review. Memorizing really obscure stuff like HSRP using port udp 1985 was fun too.

  • Don't forget snmp runs on 162 as well when utilizing traps

  • Not gonna lie. Totally underrated video. Definitely going to recommend this to the study group I'm running.
    Keep up the good work

  • pickupline nobody gets, I am so nerd, that at the end of my date, I ask my girl for TFTP.

  • Chris the great.Amazing topics as well, if i buy your course i found all of these?

  • this is so interesting! Ishould be coding for my work…instead I'm watching these things called packets fly around. 😲

  • Tnx for the lecture. Just stumbled to it and find your style really calm and clear

  • Today in class we needed to look at a SMTP and a POP3 file in wireshark, and I asked if SMTP can be encrypted. They said no. Argh, so frustrating to hear that it can be, after all.

  • I love too watch more but i got to up in the morning to prepare for my ccna which is on the 1/2/2023…man i learn so much from you bro….

  • I have another question ,please if we tftp uses udp why we see the client makes an ack for the packet ?

  • love the video chris , can I ask if u can do a deepdive into dns so we see the headers and the flags and how they are used in ddos and dns recursive flood , thanks for sharing

  • Interesting and very clear video.
    But I wonder why you should have to KNOW all them port numbers.
    I feel it makes more sense to understand the purpose and global working of the protocol. The details are easy to find.
    The port number is very useful, of course, but easy to look up.
    Or do they ask you at exams "What is the port number for FTP?"

  • Thank you so much Chris.Very informative video!!!Great explanation,love it!!!

  • Incredible lecture! I’ve been studying this information for months and having trouble retaining it, until now. Thanks!

  • Please help… If DHCP 'gives' a computer an ip address… what does it mean to give an 'address to an address'. This seems like sending a letter to someone's address and contained within the letter is an address?? How can the 'new dhcp address' reach the address if there is no address??

  • I love the tests that you gave as you introduced each different protocol — very entertaining!

  • Chris, another great video! Where could one purchase a packethead T-shirt?

  • Amazing content as always, one of the best channels on YouTube

  • Oh heck ya!! This video is an excellent review of ports and protocols as a NOOB, but I’m also going to use it to get more comfortable with Wireshark. Thanks Chris!

  • I have started in this beautiful world of content on YouTube, I am new to this and here we go with issues of cybersecurity and ethical hacking

  • Sir am using andrind phone i don't have laptop, what should i do, please help me out in my career.

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