Static NAT -- Configuration and Verification -- NAT on Cisco IOS Routers (FREE Course Preview)

This video demonstrates the syntax to configure a Static NAT on a Cisco Router. We then send packets through the device to show you the packets before and after translation to show you exactly what is modified with a Static NAT. We'll also look at the command `show ip nat translations` to verify the NAT operation through a Cisco router.
This is a free lesson from my course on Network Address Translation on Udemy. The course runs $30 normally, or less through the various Udemy Sales:
www.udemy.com/...
Or you can by it from me directly for $10:
classes.pracne...
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The full course has two modules:
The first module will teach you Everything there is to know about Network Address Translation: Why it exists, How it it works, What happens to packets as they get translated. This module will explain every type of translation: Static NAT, Static PAT, Dynamic PAT, and Dynamic NAT. You'll learn about each of these in a way that is completely vendor agnostic -- the concepts you learn here will apply to any vendor and any platform. You'll then learn how these four types of translations are used in Policy NAT and Twice NAT.
The second module will teach you how to Configure and Verify each type of address translation discussed in Module 1. If you configure or troubleshoot NAT on a Cisco Router, this is the module for you! We'll methodically take you through the the syntax for each type of NAT and show you various show commands that let you validate NAT's operation.
The lab topology will show and prove every NAT concept from Module 1, as we show you a packet capture before it arrives on the NAT router, and after it leaves the NAT router -- showing you exactly what is changed and in what situations.
This course is the last resource you will ever have to study to become a subject matter expert (SME) on NAT on a Cisco Router.

[@dannydominguez6815]

The inside global IP addresses are not in the topology. Where did you get them? Can they be any IP addresses you want?

[@mashudu6254]

im a bit lost here, how did you find the inside global address?

[@souzabimaru2658]

i am sorry but isnt r3 a public ip address?

[@mitchfierro7044]

is BGP already set up between the routers, in this example?

[@PracticalNetworking]

Not BGP, but I have static routes and static default routes configured on the Routers.

Hello!, thx for your tutorials, really good material!. I´m starting in Networking, and it is probably a dumb question, but, How do you get that capture packet windows from xR1 and xR3?

Nevermind, i got it. I´m replying your lab with eve-ng, but now I have wireshark integrated and can capture packets. Congratulations again for your work!

[@PracticalNetworking]

In the full course I talk through the environment set up. Those windows xR1 and xR3 are Linux hosts configured as Routers, and the captures are merely TCPdumps.
But well done on re-creating it yourself in eve-ng =)

[@cybersecurity90]

Perfect. great explanation

[@PracticalNetworking]

Thank you!

[@ozkand.2666]

Thanks bro. Good job...

[@shriloo]

Well explained... Thanks keep posting more videos....

[@PracticalNetworking]

Thank you! Will do =).

[@ianm-cmd_rav1448]

Great example by showing live demonstration

[@PracticalNetworking]

Thanks again. Ian. Thank you for your support. =)

[@thilsathahmad5014]

This video is cool. Could you share the configuration video link?
Also, from the Topology, I cant understand where the 9.9.9.x network comes

[@PracticalNetworking]

The 9.9.9.x network is the network I picked for all translated addresses. This could be, for instance, the IP space assigned to the company that owns the NAT Router.
(not sure what you mean by configuration video link?)

[@TheAntonio6579]

Thanks man, very helpfull

[@PracticalNetworking]

You're welcome!

[@liamtingle2762]

Brilliant video !!

[@PracticalNetworking]

Glad you enjoyed it =)

[@star_roblox1821]

Appreciated your efforts..

[@stellardancing]

Great video

[@PracticalNetworking]

Thank you =)

[@scorpio_1312]

Hi Ed, great tutorial and great explanation! I have a question, you are statically mapping addresses in the 10.1.1.0/24 network to 9.9.9.0 in R2, from the perspective of R3, how does R3 know how to communicate back to 9.9.9.0? are you advertising that network on R2? I know this is a NAT tutorial but I just had that question.

[@PracticalNetworking]

Yea, good question. If I recall, I had R2's gateway pointing to R3. Then I had a specific static route on R2 telling it that the 10.1.1.0/24 network existed behind R1.
R3 and R1 both had default gateways pointing back to R2.
This worked for all the NAT's in this course, except for when we got into Twice NAT. For that one I had to add an additional static route on R2. I explain that in the Twice NAT video.

[@scorpio_1312]

@@PracticalNetworking Thank you! Watching the twice NAT video now :)