Overlapping network addresses - How to deal with it in AWS using private NAT gateway | Hands-On

- Did you know that with a private NAT gateway you can hide your entire network?
- Did you know that if you have 2 networks with the same IP range, the resources contained in them can still connect to each other?
Yes it is possible, in the video I have prepared I talk about the whole process and I also recorded a whole tutorial showing step by step what to do to achieve it.
Hands-On Tutorials for Amazon Web Services (AWS).
A NAT gateway is a Network Address Translation (NAT) service. You can use a NAT gateway so that instances in a private subnet can connect to services outside your VPC but external services cannot initiate a connection with those instances.
TIMESTAMPS
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0:00 ⏩ Introduction & Theory
2:55 ⏩ Basic VPCs & Subnets
4:12 ⏩ EC2
5:20 ⏩ Basic VPC & Subnets - edit CIDRs
5:58 ⏩ New Subnets
6:31 ⏩ NAT Gateway
6:55 ⏩ Load Balancer
9:20 ⏩ Transit Gateway
10:25 ⏩ Route Tables
13:08 ⏩ Security Group
13:39 ⏩ Reachability Analyzer
You can find more tips on my TH-cam channel and on my blog lepczynski.it/en.
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[@tamaraIT]

wow thanks for this video, real life example and step by step instruction, it seems simpler now, thx 💖

[@WojciechLepczynski]

No problem, thanks for feedback

[@Tony-bc4wc]

Thanks for the real usage example, not just theory

[@WojciechLepczynski]

No problem. New tutorial coming soon

[@Antoni_Martyniak]

Great movie. You have done a good job mate. :)

[@WojciechLepczynski]

Thanks for feedback

[@KingEMN]

What appliance are you using for the NAT? Can you post a tutorial on how that was configured?

[@WojciechLepczynski]

I just use AWS NAT gateway. The configuration is simple, you can see it in this video from 6:32. Soon there will be an article about it on my blog.

[@isamon9151]

thanks, so You need the Network Load Balancer too right? to route the destination through it

[@WojciechLepczynski]

you can use something else, but on the subnet where I created the load balancer you should have something that forwards the traffic, you cannot refer directly to the target network

[@martinkrueger937]

Nat gateways are ruining my workflows , they are timing out my ec2 instances :(

[@WojciechLepczynski]

Nat gateway is another point in the path that packets travel and can minimally extend it.
If you are getting a timeout, it may be a configuration mistake. It's a good idea to use the Reachability Analyzer tool and see if there is a problem between the source and the destination.

[@robcesarfy]

This is a good post, but I'd recommend re-shooting the video. It is very fuzzy at the moment - one can't really make out what info you're adding into each screen.

[@WojciechLepczynski]

Thanks. I checked and in the highest resolution I did not notice such problems. At what point in the video did you notice the problem?