We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is Why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 618 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

 

408 New Members signed up the last 30 days!

satisfaction-guaranteed

100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags: ,


Forum Replies

  1. Hi Roland,

    Good question. You are right, when I’m talking about “Inside global is the IP address on the outside interface of your router performing NAT” then I’m referring to static NAT or PAT where we translate to this IP address.

    When you use dynamic pool, it would be “inside global is the IP address from the pool that you translate the inside local address” to :slight_smile:

    Rene

  2. Hello Sumit

    This is a very good question because the terms used with NAT can become very confusing. Let’s say you are the Inside Host and you are connecting to a web server which is the Outside Host like so:

    https://cdn-forum.networklessons.com/uploads/default/original/1X/eb1ecaeb2f794f41704468d582b014dced2ffa16.png

    You can see that the packet leaving the inside host and travelling towards the NAT router has:

    * Source Address: Inside Local - a private address such as 10.10.10.5
    * Destination address: Outside Local - the public IP address of the outside host su

    ... Continue reading in our forum

  3. Hello Maodo

    Don’t worry, you are reading up on CCNA material. Rene is referring to the fact that the Outside Local and the Outside Global addresses are the same. These however can be configured so that they are different. That is, the destination IP address can also be translated by NAT. It is this configuration alone that is outside of the CCNA curriculum. Not to worry, the rest is definitely covered within the CCNA curriculum.

    I hope this has been helpful!

    Laz

  4. Thanks for your explanation, Lazaros.

    My question was no so technical. A CCNP lesson telling about CCNA scope ; I thought, it’s Copy/Paste error. Now, I understand that one lesson can belong to CCNA and also be re-used, without any change, in CCNP or CCIE courses. I found below the three (CCNA, CCNP, CCIE) links having the same NAT lesson (the lesson that was originally written for CCNA).

    …/ccna-routing-switching-icnd1-100-105/how-to-configure-dynamic-nat-on-cisco-ios-router/
    …/ccnp-route/how-to-configure-dynamic-nat-on-cisco-ios-router/
    …/ccie-routing-switchin

    ... Continue reading in our forum

  5. Hello Sumit

    There are two types of translation entries: Simple and Extended. A simple translation entry maps one IP address to another. The keyword extendable which indicates an extended translation entry indicates that the translation entry will map an IP address and port pair to another. The extended translation includes the port. An example of such a configuration is the following:

    ip nat inside source static tcp 192.168.1.4 25 199.198.5.1 25 extendable
    ip nat inside source static tcp 192.168.1.3 21 199.198.5.1 21 extendable
    ip nat inside source static t
    ... Continue reading in our forum

15 more replies! Ask a question or join the discussion by visiting our Community Forum