I thought it would interest you the people to know how our routers translates and routes Internet traffic to the individual devices on your private network. Here's the link.
Hello friends,
I just published my first self-paced course on Udemy and wanted to give it away for free to this Subreddit!
https://www.udemy.com/course/network-address-translation-cisco-routers/?couponCode=NEW-COURSE-FREE-3DAY
This link expires in 3 days because of how Udemy does it's coupons. So even if you don't plan to watch it in the next 3 days, at least sign up and register to get it for $0 -- you'll have permanent access going forward.
Course Description:
> This 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.
Note: This content goes deeper than you need for the CCNA. That is intentional because it will teach you how NAT works not just what to memorize about NAT. At the end of the course, you will actually understand the underlying principles and won't need to use memory recollection during test time -- you'll be able to recreate the knowledge as needed. Meaning.. this will not only help you pass the CCNA, but also job interviews!
For those who wonder what CGNAT is and why one doesn't see a public IP for your router's WAN port when plugged into the power brick, this article explains a bit about it. The WAN IP is normally in the 100.64.0.0/10 netblock.
https://www.sidn.nl/en/news-and-blogs/cgnat-frustrates-all-ip-address-based-technologies
I have a upcoming project where multiple Machine builders all what to use their standard IP scheme and I need Machine 1 to Machine 2 messaging. Pretty similar to 1783-UM007M-EN-P Figure 17 page 186. I had been looking at using a 1783-BMS20CGN, but I now think that switch will not work for this type of application. Can anyone confirm that this is true or have a recommended Stratix switch to make that type of NAT communication work? Any tips?
Hi all,
I've been lurking so much for over a year, but finally decided to register and ask one of (many) questions.
In the spirit of 'no stupid questions'.. here's one that's been philosophically bugging me. Let me know if I have the idea right.
Let's say pentesters are hired to assess the breachability of an organization.
They are able to do this because some organizations have many machines DMZ'd or public facing, right?
I am asking because for a while I have been trying to think of a way to nmap/scan past NAT (think a home network), and can't think of a way to do that without
a) being a part of that network (which is why things like HTB and OSCP drop you into a vpn, correct?), or
b) forcing the (maybe clumsy) operator to open a port beaming to the world via malicious link or the like.
Is my line of thinking correct, or is there another way to push past the NAT perimeter and scan what's inside?
Thanks all.
Network address translation is a method of mapping one IP address into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing or Layer 3 device. As we know that private address is not routable on the internet. We can only communicate with the public address on the internet. So with the help of the NAT process, we can translate a private address into public addresses.
I am a 1st Networking student. I know about NAT, but why is it so difficult for my Xbox to be have an open NAT that allows me to play with everyone?
I'm actually in shock. Go take a look at their documentation: https://www.nintendo.co.uk/Support/Nintendo-Switch/How-to-Set-Up-a-Router-s-Port-Forwarding-for-a-Nintendo-Switch-Console-1498000.html?fbclid=IwAR2s6msMZoCyBJ4Y2E7kNyM_XFB84q3oYSG2cZ_k7wl_LMFyuiOYytcBLpY
17. Within the port range, enter the starting port and the ending port to forward. For the Nintendo Switch console, this is ports 1 through 65535.
Why on earth would every single port need to be open?!
i recently started grad school and the school's wifi (the one i have access to from my apt) uses a port access translation (PAT) instead of a network address translation (NAT).
this results in my being able to successfully connect and update my 3ds, but when i go to play any online portion of a game i get dc'd roughly a minute in every time. i contacted IT at my school and they don't know what to do. i've tried tethering from my laptop using ethernet, but since its the same network i have the same issues :(. any advice for how to use a 3ds in a PAT environment, if possible?
Greetings.
I made the same post in the Alpha Forums, but I ask the same here:
I heard about some NAT issues with ports, firewalls and such (in previous alphas). At this point I don't have any (since the alpha is not started yet), but some tips would be greatly appreciated for eventual connectivity problems, so we can be prepared accordingly.
I've googled it and all the answers are very complex. I need it explained to me like I'm five.
Thanks!
In this tutorial we will study What is Network Address Translation (NAT), How does NAT work, What are the types of NAT (Static NAT, Dynamic NAT, and Port address translation), What are the advantages of NAT, and What are the disadvantages of NAT with the help of a suitable example.
Network address translation is a method of mapping one IP address into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing or Layer 3 device. As we know that private address is not routable on the internet. We can only communicate with the public address on the internet. So with the help of the NAT process, we can translate a private address into public addresses.
Network address translation is a method of mapping one IP address into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing or Layer 3 device. As we know that private address is not routable on the internet. We can only communicate with the public address on the internet. So with the help of the NAT process, we can translate a private address into public addresses.
