NAT – Part 1 (Network Address Translation)

network address translation, NAT

The increase of the internet users has consumed IPv4 addresses rapidly. And to continue with these addresses various techniques have used by organizations. One of them is Network Address Translation(NAT).

As you know there are public and private addresses. The public addresses are used to reach to the internet, because they can be routed on internet. But the private addresses are used within an organization only, because they can not be routed.

With NAT, we can use private address millions of times all over the world and still can be access to the internet. Here, NAT provide the translation from private address to the publica address.We are connecting internet with our private address, bur in real at the backplane it is doing this with a public address.

Private to public address translation is not the only way that NAT is used. NAT is also used for public to puclic or private to private translations. But the first one is most common.

For securtiy reasons, NAT also provide hiding your network from the outside of the world. Because the remote node that you connect by internet, only knows your public address, not the real internal address of your pc.

There are types of NAT.These are:

• Static NAT
• Dynamic NAT
• PAT(Port Address Translation) or NAT Overload

You can reach the other NAT articles below:

Network Address Translation (NAT) – Part 1
Network Address Translation (NAT) – Part 2 (Static NAT Configuration)
Network Address Translation (NAT) – Part 3 (Dynamic NAT Configuration)
Network Address Translation (NAT) – Part 4 (Port Address Translation)


5 Responses to “NAT – Part 1 (Network Address Translation)”

  • Hi Gokhan,

    Do you have setup for these labs in packet tracer?
    Also please provide your skype ID.


  • Junaid Jadoon / / Reply

    really a helping site but can i get video labs

  • Thanks for your helping.Its really useful.

  • j boy / / Reply

    thank you so much , this is helping :)

  • Mohamed Rafi / / Reply

    Hello Sir
    Is this possible, can i configure NAT in SRS 6850E Alcatel switch.
    How can i do the coding for VTP.


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