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nat static routing

Hello,

I have a working nat configuration, with a static nat setting like this:

ip nat inside source static tcp 192.8.100.19 80 xxx.xxx.xxx.xxx 80

From the internet this is workimng just fine, but when I try to browse the

public ip address from te LAN it doesn't work.

How can I solve this?

Kind regards

Glenn Volckaert

1 REPLY
Cisco Employee

Re: nat static routing

NAT only works for traffic crossing the boundary inside - outside (defined with the 'ip nat inside|outside' command)

Since your internal traffic does not cross this boundary, the destination can not be

translated.

You have to use the internal address.

With a router there is no solution to this problem.

If a Pix was used to do NAT, there is something called DNS doctor in order to fix this same problem.

The only solution I can see, is if you use a 3rd interface.

Your internal lan will be attached to 1 interface.

The interfnet will be attached to a 2nd interface.

And the server will be on the 3rd.

The first 2 interfaces (LAN and Internet) will be setup as outside nat.

The 3rd interface with the server will be the inside.

Hope this help.

Regards,

Gilles.

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