NAT and Firewall Explained

[@mujtabaarfat717]

In simple terms NAT is used to convert ur ip address into ur routers ip address , this is done because ipv4 which is a 32 bit ip address is limited and exhausted . Ur private ip address is not recognized by google so ur router does the talking to the internet. It is like a cell phone which allows u to talk to google.So ur private ip address is converted into the internet ipaddress with the help of net masking which u can see on seeing ifconfig which shows that ur private ip address is converted into the routers ip address. Basically when u buy internet connection you are buying an ipaddress that can talk to the world.Ur ISP has globally bought a range of ip address from IANA and it is giving u an ipaddress. So all the devices which access internet from ur home would actually be converted into the routers ip address in ur router and those packets are shoots up into the net.So ur router does the working of a postman when it receives reply from google and internally unmask the ipaddress to determine who was the person who send that request.

[@shubhampawar373]

Thank you for the explanation🙏

[@imjoshwa]

Your explanation of Stateful vs. Stateless finally helped me to understand them. Thank you!

[@austinpeelor8408]

PROPS to this man for writing backwards!!!

[@bradt5426]

How does he do it 😮

[@yuvarajsakthi]

He is not it is inverted

[@vladislavkaras491]

Really great analogy! As IT student, and usual person interested in IT security, it was pretty clear and interesting explained! Thank you for your video!

[@bigfu]

If this guy isnt a teacher he should be. Perfect explanation

[@massnations4462]

very well explained he needs a raise

[@ProphetBusinessGrp]

Very good explanation, especially if you live at 123 first street :)

[@prutser67]

I like the analogy with the apartment building 😊

[@chesshooligan1282]

The NAT forwarding table is missing from this explanation.

[@maniac1979]

No one noticed that this dude writes everything mirrored and with the wrong hand? :D Very good job!

[@IBMTechnology]

Hi Lukas! We actually used a little trick. 😉 We shared some behind the scenes of our videos on the Community page, check it out here 👉 ibm.co/3fdhupX 😉

[@hawktalon7785]

@@IBMTechnology I'm so happy you guys shared that, I was trying so hard to focus on the subject but was so distracted with the thoughts of "how is the picture not backwards" hahaha. My curiosity has been satiated.

[@littlejin-n8x]

if a packet comes from internet then my router can just send it to my private ip address why Mac address is needed then

[@jst_align]

You explained this very well!

[@sscott88]

These are great videos. Breaks it down in a way that makes it easy to comprehend

[@IBMTechnology]

Thank you Seth.

[@kenilpatel7841]

This is really great explanation... Made my understanding crystal clear.. Thank you so much :)

[@IBMTechnology]

We love comments like this. Thanks for watching Kenil.

[@ravi2305]

Great explanation of a complex subject. Thanks for creating and sharing this video.

[@pankajsinghv]

Very good articulation pf NET and Firewall

[@internationalstudentsguide]

loved the explanation, very simple and easy to understand

[@Adhithyan3333]

Great explanation! Is NAT is possible for private to private network communication as well?

[@ankushsinha8301]

Adhithyan V yes

[@johnwhite7700]

Over DDNS and port forwarding, but if there is not more than one NAT on each side. Also, you can connect through VPN

[@danilsmith2845]

I have question please, does the NAT affect on firewall throughput?

[@prasannasampath2891]

Quite Easy to understand

[@AntonSamokat]

Great presentation! Thanks.

[@chrisbowen2093]

WHAT program are you using to do that. Reminds me of some of the work I did in the Army two lifetimes ago, when the Pathfinders WERE the GPS of the Army and we plotted movements on topographical maps.

[@katipkilic1723]

Thank u easy explanation and also take care of your eyes. :)

[@sunriseeternity300]

Thank you Frank.

[@adamm6051]

Yeah a good video indeed. Thank you!

[@Staa31]

Thanks for explaining 😀

[@freefalling_bh1907]

awesome, so easy to understand!

[@RoDrop]

Nice video, thanks for sharing

[@abdullahalshahrani8648]

You are amazing ❤

[@DonCortez78]

Great Job!!!

[@IBMTechnology]

We are glad to hear this Don. Thank you for watching.

[@sohrabsheykhmohammadi1909]

realy helpful.

[@tangaucheplease9621]

Thank you !

[@---GOD---]

"Maybe they figure out the key - heh" LOL