Dear All,
I would like to know if it is possible to NAT only the
payload of DNS queries.
I know it is possible to NAT the payload and the IP
header will be NATed at the same time,
like explained in :
http://www.cisco.com/warp/public/556/3.html
However, waht I would like to do is much basic, but I
could not find if it will work or not.
Basically, I have a UNIX 'hostA' inside making a DNS
query to resolve a name 'nameA'.
The internal DNS gets the information from an external
DNS and forward it back to the inside hostA.
However, the IP matching 'nameA' is an internet IP
that is not routed inside. Which means
that 'hostA' can not communicate with 'nameA' 's IP
address ...
What I would like to do, is not to change the routing,
and not top translate any addresses in headers because
it is working fine like this, I just need to translate
the payload of the DNS reply from the DNS server (ie
changing
from nameA<->IPexternal to
nameA<->IPtranslated2internal).
Please let me know if you know an answer, or have some
URL explaining the process.
Thank you for your help,
=====
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