Access Control Lists | Cisco CCNA 200-301

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Access control lists, also known as ACLs or access lists, are rule-based lists that are used by switches and routers to identify traffic. They can identify traffic based on source address, destination address and port numbers.
The most common use for an access list is to deny or permit traffic, but there are other uses for Access Lists such as configuring Network Address Translation (NAT) and Quality of Service (QoS).
Standard Access List
Standard access lists only use the source address to identify traffic.
A standard access list uses numbers between 1 - 99.
Cisco decided to expand this to also include 1300 - 1999
Extended Access List
Extended access lists allow us to identify traffic based on the destination address, protocol and port number.
Extended access lists use numbers 100 - 199 and expanded numbers 2000 - 2699.
Named Access List
A name access list allows standard or extended access list to be given names rather than numbers. If you have multiple access lists on a device, named lists makes it easier to identify what each list does making them easier to manage.
#ccna #cisco #networking

[@Da_Black_Man]

You guys literally break it down 100x better than the course from Cisco themselves 👏🏾

[@TideTurn]

I concur, those words came right out of my mouth

[@bobbinatorrah67]

I've been watching cisco videos for a couple of years first for my CCENT, now my CCNA, and yours are my absolute favorite. I've learned and forgotten exactly how and what some of these topics are that I don't use daily, and your videos really, really help.

[@Certbros]

Thank you! Great to hear these video are helping you brush up on these topics.

[@GianniKoch]

Damn, I've already watched 10+ video's today helping me explain the slides of cisco, have an exam soon so thanks a lot for speeding the study up by explaining things so clearly! Keep up the awesome work!

[@Certbros]

Thank you Gianni! Really glad this video helped you out. Good luck with the exam!! You'll smash it 👍

[@zes3813]

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[@ardentdfender4116]

Found the link in the description under the vid that links to the full course on Teachable. Bought it. Done! I’ve no doubt it will be worth it and don’t mind the financial support in doing so either. Will finish watching the KZbin CCNA Playlist since I’m almost done with 3-4 vids left to watch.

[@ravikeshri1]

An explanation so clear and crisp!

[@Batukibatta]

I really liked the video .. it’s soo good and descriptive. I had my paper still I took tym to write and to appreciate the work done by this young man 😅.

[@FonsieClaw]

Very clear explanation once again, thank you so much for these videos, you are an enormous help.

[@Certbros]

Thank you! Glad you liked it.

[@RexRai-dt6fx]

Really explained in a clear way Sir

[@oriostx]

Great video! This was so helpful, thank you for breaking it down.

[@benjaminblankson4297]

Excellent teaching. An extremely clear explanation. Thanks

[@NemohegbeJr]

CertBros My Hero💪

[@robbiwafik494]

Thanks for the video, really clear and concise explanatory.

[@kumarraunak3884]

Why i didn't discovered this channel earlier 😢. You really explain complex topic in easy to understand simple manner. Your presentation is fabulous.

[@emmanueladuku8136]

Great yet simple as usual.

[@Certbros]

Thank you Emmanuel! Appreciate it 👌

[@gd2860]

I love how u broke it down dumb style for my brain. Thumbs up!!!!!!!!!! Do a packet capture vid like this using EPC

[@luck4o_]

Cara, que explicação sensacional! Muito bom

[@mehdiroudeau8809]

i love u guys u are helping me sooooooooooo much

[@Dev_skoll]

You guys need to make a Udemy Course, I feel your content surpasses much of the paid content on there. I'm saying this because you deserve something out of the content you release.

[@xxjustinx34xx]

Yes please that would be great!

[@Certbros]

Thanks Bryce! I really appreciate the thought! While I don't have a Udemy course, I am in the middle of making a full course on teachable. Link in the description if you are interested.

[@Da_Black_Man]

I agree

[@cryptodax6922]

@@Certbros just bought the curse for 10 dollars !!! im sure my soon will buy your CISCO certified Guide in 10 years from now !! good job and thanks, when I feel something is not right your vides helps a lot !

[@Certbros]

@@cryptodax6922 Thank you! Happy to hear the videos have been helping and thank you for your support. Enjoy the course and let me know if you get stuck!

[@szymon2633]

Good one, helped a lot!

[@andrewritchie1699]

Great video. Thank you.

[@ichrakstudent2558]

The most helpful and straight to the point video ever. Subscribed. Love your vids guys.

[@piyush42962]

I have now a fair understanding of ACLS. All I need now is to regularly practice it.

[@ukaszkiepas57]

thank you ! :)

[@techinfor864]

Great explanation, Thanks

[@JunPetsWorld]

Excellent explanation.

[@songlyrics6612]

This channel needs more subs

[@Certbros]

Thanks! Got my eyes on that 100k! 😁

[@songlyrics6612]

@@Certbros u deserve more mate , keep up the great work

[@Certbros]

Thanks mate, I appreciate it 🙏

[@zikobht6618]

Amazing video!! The only thing omho you should've talked about is how to apply the ACL on an interface (in/out). Thanks for sharing these amazing videos

[@mahadihasanazad1400]

Wonderful teaching method.

[@balintmucsanyi6322]

Great video

[@b5mrjacob373]

Thank you so much

[@Martin_JY]

Thank you!

[@chukwudin2189]

Nice vid🔥

[@Certbros]

First comment 👌 Thank you!

[@abdirahman6734]

thank you bro

[@vargaszilvia774]

awesome thank you

[@chrispainter3602]

Thanks for the video, your effort is appreciated! Clear and concise, great delivery too. I wanted to find out more but came up to some roadblocks: The register your interest link is broken, brings up a 404. The amazon link just links to amazon, not a specific product. The exam link also brings up a 404. Hope this helps you and everyone who comes across this great video

[@Certbros]

Thanks for the heads up Chris! I've fixed all of the links now. Glad you liked the video.

[@chrispainter3602]

@@Certbros I will take another look, thanks

[@douvicndilbe663]

Thanks very much .

[@leothalion3983]

Awesome!

[@Certbros]

Thanks! 👍

[@m-electronics5977]

First: very good video, I must use ACLs yesterday but not for the "default" use case. I must use ACL to specify which prefixes will get an LDP Label! There I've must think a lot because of is the prefix now source or destination.😅 I still don't understand it in this usecase but when you think it don't name SRC and DST rather Input and Output of a function then it makes sense it must be source. But thanks for your video also when I understand this direct because it is like FW Rules...

[@111hhhhhhd]

so good

[@Certbros]

Thank you!

[@ardentdfender4116]

Understanding use of Wildcards often usually screws my brain into short circuit thinking. But it’s made a bit easier in thinking 🤔 when you say it’s totally inverse of regular subnet mark or in how it’s written in meaning. Much understandable. ACLs can be damn confusing really in my opinion and takes a lot of work to understand them, their use and where exactly they are used.

[@Karma-nc3kg]

absolutely

[@user-me4et3bp7k]

Was cool

[@JWTechStream]

Could you also cover best placement location for ACL's? like which router to place them on etc, inbound outbound

[@Certbros]

Great suggestion! If I get more interest I'll make a part 2 for placement.

[@tresmcneil]

@@Certbros I’d be down for a part 2

[@trayjobe6995]

@@Certbros me to . been studying for the CCNA acls lost me a little. + there commands can get long

[@ardentdfender4116]

This would be a much needed video as this is quite important where these ACLs are placed.

[@rafapilecki1256]

You forgot to mention that Extended ACL's are stored near to Source and Standard ACL's next to Destination of the traffic

[@Acradus]

This video did not cover how to determine which direction on the interface the port it is applied on, could you elaborate on this?

[@ganapathyramakrishnan1190]

@CertBros Your explanation are really WOW.. is there anyway you can explain BNG[Broadband Network gateway] concept ?

[@Certbros]

Thank you! If enough people make a suggestion then I'll certainly look into making it 👍

[@joedarvish70]

Good video. problem is too many commercial interruptions.

[@ciscobatais2]

better than cisco courses itselves 👍👍

[@sateeshmendadala1329]

Tq

[@sIdeoFFx]

I believe there’s a mistake in this video. At 10:38 in, he says destined for that first ACL entry instead of sourced from.

[@mokodo_]

not a mistake my friend, he was mentioning the Destination IP address at 10:38

[@imherovirat]

Hey CertBros please Make a video on subnetting. How Isp provider give us Ip address? How can i know how many Devices can i connect on my router? How can i know how many active hosts are there using my wifi?

[@Certbros]

Thanks for the suggestions Aashish! If more people request these then I'll happily put some videos together.

[@MegaNatebreezy]

@@Certbros Please make a video on subnetting!

[@AMina-rb9tm]

Could you make a video about QoS?

[@Certbros]

Yes QoS is on my to-do list 👍

[@AMina-rb9tm]

@@Certbrosawesome 😎

[@rachidnageeye7865]

We are also need NAT

[@salimmali9533]

bro cyber s miyad barta

[@rachidnageeye7865]

@@salimmali9533 hda networking ayan ku dhax jiraa lkn for future ayan rajeyna Cyber

[@tahersadeghi6773]

Numbah?

[@mareek4173]

kamo co to je :/(