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NAT Dynamic

Written by Rene Molenaar on . Posted in Network Services

Scenario:

Your friends Jack and Joe recently switched to a new Internet provider and instead of getting a single public IP address they have received multiple global IP addresses. To make sure all global IP addresses are used they ask you to configure NAT Dynamic for them. Action time!

Goal:

  • All IPv4 addresses have been preconfigured for you.
  • IP Routing has been disabled and a default gateway is configured on router Jack, Joe and WWW.
  • Configure a pool for NAT Dynamic called "GNS3VAULT". The range of IP addresses you received from the Internet Provider is 172.16.0.1 - 172.16.0.100.
  • Configure NAT Dynamic so when router Jack or Joe connect to router WWW they are translated to one of the IP addresses in the pool.

IOS:

c3640-jk9s-mz.124-16.bin

Topology:

NAT Dynamic

Video Solution:

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Comments (6)

  • avatar
    strasser

    Configure a pool for NAT Dynamic called "GNS3VAULT". The range of IP addresses you received from the Internet Provider is 172.16.0.1 - 172.16.0.100

    I'm having trouble understanding the above statement. Is the tutorial asking us to allocate the NAT pool from IP range 172.16.0.1 - 172.16.0.100 ?

    It seems to me that the NAT pool should be in the outside interface's subnet. I can successfully complete the lab if IPs are allocated the 192.168.34.0/24 subnet.


  • avatar
    ReneMolenaar
    Quote:
    Configure a pool for NAT Dynamic called "GNS3VAULT". The range of IP addresses you received from the Internet Provider is 172.16.0.1 - 172.16.0.100

    I'm having trouble understanding the above statement. Is the tutorial asking us to allocate the NAT pool from IP range 172.16.0.1 - 172.16.0.100 ?

    That's right strasser. You can use NAT to translate to IP addresses on your outside interface but also something completely different. You can translate the inside addresses to a pool with the 172.16.0.1 - 100 range.

    Just a little different to spice things up

    ;D

  • avatar
    nopret91

    hey rene,.
    can you upload the solution of this lab??
    i need it
    sorry for my english

  • avatar
    ReneMolenaar

    I just uploaded it to Youtube, will add it to the article + final configs today.

  • avatar
    nopret91

    thank you very much Rene

  • avatar
    ReneMolenaar

    Your welcome I hope it's helpful to you.