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Internal NAT routing

Posted on 2010-08-28
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Last Modified: 2012-05-10
Hi,

I currently have a public IP nated to an internal ip and that works fine.

Now I would just like to find out if it is possible to me to be able to connect to that NAT address from inside my network. Just so that I can use the same ip when inside and outside my network and dont need to worry about remebering the internal and external ip's.

Regards,
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Question by:avineshp
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rfc1180 earned 500 total points
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Now I would just like to find out if it is possible to me to be able to connect to that NAT address from inside my network.

Depends, this is what we call a "NAT Hair-pinning" and configs can get ugly depending on the type of device you have, and some just do not have the capability.

Just so that I can use the same ip when inside and outside my network and dont need to worry about remebering the internal and external ip's.

Typically, in this case, you have a network that is dedicated for your LAN: corp, dev, etc and that is separate from your DMZ zone (Typically, your one to one NAT from outside to inside would be your DMZ). You have separate nameservers for your external and internal users. Some DNS servers offer the capability to work with DNS access-lists on the DNS servers to state this traffic is for internal use and others is for external use. What it boils down to, you want to use DNS and how you deploy DNS will be based on your current network design and possibly your business model too.

Billy
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