Network Gear that

Erik Freitag erik.freitag at
Fri Mar 4 15:36:02 UTC 2005

> I've noticed some unpredictable behavior when doing queries from
> inside our network.
> This includes the following:
>   dig
> returns an INTERNAL address.
> When I access a host from outside our internal network and do the
> thing, I get the expected address.
> This leads me to believe that within the internal network, some
> of network gear is intercepting my query and providing an answer it
> thinks should be provided.
> We have mostly cisco gear, including pix firewalls.  Does anyone
> of network gear that would do that?  If it's a pix, where can one
> the settings for this?

Network Address Translation (NAT) on a router or a PIX will look inside
DNS response packets and apply the translation to the responses unless

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