# IP NAT inside source vs IP NAT outside source

**URL:** https://forum.networklessons.com/t/ip-nat-inside-source-vs-ip-nat-outside-source/5578
**Category:** Lessons Discussion
**Created:** [November 27, 2018, 12:38pm UTC](https://forum.networklessons.com/t/ip-nat-inside-source-vs-ip-nat-outside-source/5578 "2018-11-27T12:38:31Z")
**Posts on this page:** 1
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### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [November 30, 2018, 6:17pm UTC](https://forum.networklessons.com/t/ip-nat-inside-source-vs-ip-nat-outside-source/5578/3 "2018-11-30T18:17:27Z")

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Hello Mohammad

This is an excellent question. Take a look at this post:

> [@Cisco ASA NAT Port Forwarding](https://forum.networklessons.com/t/cisco-asa-nat-port-forwarding/818/38):
>
> Hello Bruce Although it is true that the vast majority of NAT configurations are indeed nat (inside,outside), there are situations where the nat(outside,inside) scenario is useful. One such example is if you have a web server that is on the Internet that you want users on the inside of a network to access using an internal private address. This example can be seen in the following Cisco documentation on pages 2 to 4 in a section titled “NAT for Inside Hosts (Dynamic NAT) and NAT for an Outsid…

This post may refer to a similar configuration using an ASA, but the concept is the same. This gives you a practical example where you would want to translate the outside address.

I hope this has been helpful!

Laz

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