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Practical Networking
United States
Registrace 11. 01. 2016
If you’ve been in the Network Engineering career field for any small amount of time, then you’ve probably been frustrated at how difficult it was to find articles and videos that were reliable, thorough, and understandable.
You found articles that were very entry level, that perhaps gave simple definitions but did not communicate enough to explain how technologies actually worked. You found articles that were overly detailed, that went into so much minutia that the original point would be lost.
The intent of the blog and video channel is to bridge that gap - providing the happy, practical medium between overly simplistic and overly detailed.
PracNet teaches in a manner that is accessible, easy to learn, and easy to pass on. By presenting complex technology simply, PracNet provides practical, immediately applicable, knowledge of the Network Engineering industry.
You found articles that were very entry level, that perhaps gave simple definitions but did not communicate enough to explain how technologies actually worked. You found articles that were overly detailed, that went into so much minutia that the original point would be lost.
The intent of the blog and video channel is to bridge that gap - providing the happy, practical medium between overly simplistic and overly detailed.
PracNet teaches in a manner that is accessible, easy to learn, and easy to pass on. By presenting complex technology simply, PracNet provides practical, immediately applicable, knowledge of the Network Engineering industry.
OSI Model Layer 5, 6, and 7 -- Session, Presentation, & Application Layers -- what they actually do
Plenty of attention is given to L1-L4 of the OSI model... but very little attention is given to the Session Layer, the Presentation Layer, and the Application layer (Layers 5, Layer 6, and Layer 7). That's led to a lot of bad information existing about these three errors. So I decided to create a video that explained how these three layers work, and how they contribute towards the goal of Networking: sending data between two computers.
This video can be considered a follow up to my first two videos on the OSI model:
OSI Model - Layer 1, Layer 2, Layer 3
czcams.com/video/LkolbURrtTs/video.html
OSI Model - Layer 4, Layer 5/6/7, Encapsulation De-Encapsulation
czcams.com/video/0aGqGKrRE0g/video.html
In addition, I highly recommend watching my last video before or after watching the OSI model Layer 5, 6, and 7 video:
czcams.com/video/ArXMa111x7A/video.html
----
00:00 - Intro
00:42 - OSI Model, TCP IP Model, Four / Five / Seven layer models
02:00 - Layer 5 - Session Layer
04:06 - Session Layer Modern Example: HTTP Cookies
06:04 - Layer 6 - Presentation Layer
07:38 - Presentation Layer Modern Example: ASCII encoding
08:19 - Layer 7 - Application Layer
09:34 - HTTP vs FTP - protocols implement L5, L6, L7 independently
10:43 - Why L5-L7 are often combined?
11:14 - Networking Models - Layers of Abstraction
12:30 - pracnet.net/networking
----
If you want a full training series unpacking Networking Fundamentals and how Data moves through the Internet, check out Module 1 of the course which is available for free on CZcams:
czcams.com/play/PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi.html
And if you enjoyed that series, consider the expanded course based on this series covering the full depth of Networking:
pracnet.net/networking
This video can be considered a follow up to my first two videos on the OSI model:
OSI Model - Layer 1, Layer 2, Layer 3
czcams.com/video/LkolbURrtTs/video.html
OSI Model - Layer 4, Layer 5/6/7, Encapsulation De-Encapsulation
czcams.com/video/0aGqGKrRE0g/video.html
In addition, I highly recommend watching my last video before or after watching the OSI model Layer 5, 6, and 7 video:
czcams.com/video/ArXMa111x7A/video.html
----
00:00 - Intro
00:42 - OSI Model, TCP IP Model, Four / Five / Seven layer models
02:00 - Layer 5 - Session Layer
04:06 - Session Layer Modern Example: HTTP Cookies
06:04 - Layer 6 - Presentation Layer
07:38 - Presentation Layer Modern Example: ASCII encoding
08:19 - Layer 7 - Application Layer
09:34 - HTTP vs FTP - protocols implement L5, L6, L7 independently
10:43 - Why L5-L7 are often combined?
11:14 - Networking Models - Layers of Abstraction
12:30 - pracnet.net/networking
----
If you want a full training series unpacking Networking Fundamentals and how Data moves through the Internet, check out Module 1 of the course which is available for free on CZcams:
czcams.com/play/PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi.html
And if you enjoyed that series, consider the expanded course based on this series covering the full depth of Networking:
pracnet.net/networking
zhlédnutí: 31 898
Video
HTTP vs HTML: Unveiling Network Protocols using Telnet
zhlédnutí 27KPřed 7 měsíci
At the surface, this video is about HTTP, HTML, and Telnet. But beneath that this video is actually a demonstration of how every Network Protocol works. A Connection is made via TCP or UDP, a request is sent, a response is received. We demonstration this with HTTP / HTML / Telnet, but this same sequence occurs with nearly all other protocols as well. In this demonstration, we show you exactly w...
TLS 1.3 Handshake - many CHANGES from prior versions!
zhlédnutí 14KPřed 11 měsíci
TLS 1.3 Handshake - many CHANGES from prior versions!
TLS 1.3 Cipher Suites - Here is what CHANGES!
zhlédnutí 10KPřed 11 měsíci
TLS 1.3 Cipher Suites - Here is what CHANGES!
TLS 1.3 - What Changes? What stays the same?
zhlédnutí 12KPřed 11 měsíci
TLS 1.3 - What Changes? What stays the same?
Ask Me Anything - 150k Subscribers - THANK YOU
zhlédnutí 2,6KPřed 11 měsíci
Ask Me Anything - 150k Subscribers - THANK YOU
UDP doesn't suck! It's the BEST L4 protocol for THESE types of applications...
zhlédnutí 27KPřed rokem
UDP doesn't suck! It's the BEST L4 protocol for THESE types of applications...
TCP - 12 simple ideas to explain the Transmission Control Protocol
zhlédnutí 111KPřed rokem
TCP - 12 simple ideas to explain the Transmission Control Protocol
TCP vs UDP - Explaining Facts and Debunking Myths - TCP Masterclass
zhlédnutí 80KPřed rokem
TCP vs UDP - Explaining Facts and Debunking Myths - TCP Masterclass
Can I rebuild an OSPF topology using ONLY the LSDB?
zhlédnutí 11KPřed rokem
Can I rebuild an OSPF topology using ONLY the LSDB?
Keychains / Key Rotation / hmac-sha keys - OSPF Authentication - Practical OSPF
zhlédnutí 6KPřed rokem
Keychains / Key Rotation / hmac-sha keys - OSPF Authentication - Practical OSPF
TLS Handshake - EVERYTHING that happens when you visit an HTTPS website
zhlédnutí 99KPřed rokem
TLS Handshake - EVERYTHING that happens when you visit an HTTPS website
OSPF Area Types - Stub, NSSA, Totally Stub, Totally NSSA - Practical OSPF
zhlédnutí 21KPřed rokem
OSPF Area Types - Stub, NSSA, Totally Stub, Totally NSSA - Practical OSPF
OSPF Network Types - FINALLY, an explanation that makes sense - Practical OSPF
zhlédnutí 29KPřed rokem
OSPF Network Types - FINALLY, an explanation that makes sense - Practical OSPF
OSPF LSA - the BEST explanation of the Types of OSPF LSAs
zhlédnutí 33KPřed rokem
OSPF LSA - the BEST explanation of the Types of OSPF LSAs
Designated Router // Backup Designated Router // DR BDR Election // Practical OSPF // Lesson 6
zhlédnutí 24KPřed 2 lety
Designated Router // Backup Designated Router // DR BDR Election // Practical OSPF // Lesson 6
HSTS - HTTP Strict Transport Security - Protect against SSL Stripping attack - Practical TLS
zhlédnutí 33KPřed 2 lety
HSTS - HTTP Strict Transport Security - Protect against SSL Stripping attack - Practical TLS
What are Cipher Suites? - Practical TLS
zhlédnutí 41KPřed 2 lety
What are Cipher Suites? - Practical TLS
OSPF Configuration & Show Commands - Practical OSPF
zhlédnutí 53KPřed 2 lety
OSPF Configuration & Show Commands - Practical OSPF
OSPF Neighbor Adjacency States: DOWN ATTEMPT INIT 2-WAY EXSTART EXCHANGE LOADING FULL
zhlédnutí 28KPřed 2 lety
OSPF Neighbor Adjacency States: DOWN ATTEMPT INIT 2-WAY EXSTART EXCHANGE LOADING FULL
OSPF Hello Packets :: Area Types (Stub/NSSA) :: BDR/DR :: Practical OSPF
zhlédnutí 31KPřed 2 lety
OSPF Hello Packets :: Area Types (Stub/NSSA) :: BDR/DR :: Practical OSPF
OSPF Areas and OSPF Types of Routers - Practical OSPF - Lesson 2
zhlédnutí 35KPřed 2 lety
OSPF Areas and OSPF Types of Routers - Practical OSPF - Lesson 2
OSPF Framework & OSPF Packets: LSDB, LSA, Hello, DBD, LSR, LSU, LSAck
zhlédnutí 54KPřed 2 lety
OSPF Framework & OSPF Packets: LSDB, LSA, Hello, DBD, LSR, LSU, LSAck
EGP / IGP :: Distance Vector / Link State :: Dynamic Routing Protocols :: OSPF EIGRP BGP RIP IS-IS
zhlédnutí 50KPřed 2 lety
EGP / IGP :: Distance Vector / Link State :: Dynamic Routing Protocols :: OSPF EIGRP BGP RIP IS-IS
Looking inside an SSL Certificate with OpenSSL
zhlédnutí 12KPřed 2 lety
Looking inside an SSL Certificate with OpenSSL
OpenSSL - Encrypting and Decrypting Private Key Files
zhlédnutí 15KPřed 2 lety
OpenSSL - Encrypting and Decrypting Private Key Files
Twice NAT - Network Address Translation
zhlédnutí 20KPřed 2 lety
Twice NAT - Network Address Translation
Policy NAT - Network Address Translation
zhlédnutí 13KPřed 2 lety
Policy NAT - Network Address Translation
Dynamic NAT - Network Address Translation
zhlédnutí 18KPřed 2 lety
Dynamic NAT - Network Address Translation
Very interesting and very clear. Thank You.
You explained this extremely better and faster than my professor, much easier to understand and take notes on!
absolutely amazing, you are a great teacher, thank you for these years ive learned from you
you’re amazing and you saved me
Good explanation!
I really appreciate you for letting us to learn about networking fundamentals for free besides that the way you teach is super clear and easy to understand specially this lesson was my favorite lesson Thanks again.
This works very well and has helped a lot but how do you use this with when CIDR notation is less than 25? Anything 25 - 32 I've got down - I must be missing something here :( Actually the chart listed in this thread filled in the gap. I think I'm getting the concept now - still great video, helped a lot! Thanks to those that included the chart below. MN SM 1.o. 2.o. 3.o. 4.o. 128 128 1 9 17 25 64 192 2 10 18 26 32 224 3 11 19 27 16 240 4 12 20 28 8 248 5 13 21 29 4 252 6 14 22 30 2 254 7 15 23 31 1 255 8 16 24 32
The video series talks about 3rd octet and 2nd/1st octet Subnetting in video 6 and 7. Link to full series in description =)
Which software you are using for making this diagram
amazing...easy to understand, thank you 🤙
The best networking tutorial for beginners on the internet . Thank you hero 🦸
Thank you so much. Ive watched your ACL playlist and upto this video on this playlist and i gotta tell you its helped so much. Thank you again for this.
Wow, now i know how to go about to fully understand these protocols, great explanation. Kudos!!!
I literally enjoyed this session sir.... thank you soo muchhh💌💌💌💌💌
First of all I must praise God and thanks Jesus, because for he made you wonderfully and fearfully and because you are blessed with networking knowledge and you are a blessing for all of us with this amazing free videos. God Bless You More !! Keep up Brother Good Work 😇
Perfect explanation.
Hello
Keep up the good work! Great Video!
Thank you so much! Do you happen to know any practical resources on learning the Dynamic route protocols? Or rather, any resources which is similar to this type of content?
wow wow , best tuto ever im not gonna lie
Hello sir. Love from India..great teaching skills❤
This guy is truly a legend.
useless
you are an amazing teacher!!
Even though I come from Germany and don't understand English very well, I understood everything pretty well. Thanks!!
Thank you for such beautiful animation and explanation .
I hope you and your beloved ones are healthy and happy for entire life sir. I am really grateful to your efforts.
helpful!
Why do you keep pronouncing ACSLIST Instead of ACCESS LIST?!
I was going through the video and I came across one question. Is it necessary that the public and private key values must be greater than the two prime numbers(P,Q) chosen in the beginning?
wow
Thank you
This is amazing. Why does the cheat sheet stop at /25? I guess we can just continue it all the way to /1 if needed
Great lecture
dude.. this is GOLD! i've been struggling so long with this. i could do it, but not fast enough to answer questions within a minute. thank you.
What if Subnet is 24 or 16 or 15
I am usually not a person who likes online learning, but you have taught in such a simple way, even without a background of Networking , I can understand every step you explain. Thank you 😊🙏🏽
So heres a question, why is it that a switch can learn the MAC address from a device sending data through a switch port but not learn a MAC address from an ARP request that was sent back through the switch port from the recipient?
This is the best, can't thank you enough
Thanks for the great video! I don't think what you call the totient in your video is actually the totient. I believe it is the product of the totient's of each prime number. I am basing this off of this video from Khan academy czcams.com/video/qa_hksAzpSg/video.htmlfeature=shared and the Wikipedia article on totients en.wikipedia.org/wiki/Euler%27s_totient_function
This makes networking make so much sense... thank you.
Excellent video, and easy to follow explanations / graphics. P.S. - Either Pam is really cute, or I need to talk to a counselor about my loneliness.
Awesome 🙌
Can you please make a video to solve this kind of problems in your style "Given IP is 211.17.180.0/24, administrator wants to create 32 subnet, then find out subnet mask, number of address in each subnet, first and last address of subnet 1, first and last address of subnet 32?
the quality of these modules is mind-blowing!!
Rockstar! I wonder if you could also do similar lessons on vrf, MPLS, BGP as well. I have been looking for just these types of lessons.
Okay
thx