[svlug] NAT from the outside
Seth David Schoen
schoen at loyalty.org
Mon Jun 11 01:35:02 PDT 2001
Ivan Sergio Borgonovo writes:
> Is there any means to see if a gateway using NAT is hiding a LAN?
Not in general.
> Are there any "exotic" services that could require partial unhiding
> or configuration nightmares if I want the service running but _also_
> if I want to hide that it is serviced by an internal machine?
They're not very exotic -- FTP can be one such.
Many services are now designed so that you can use them over an
arbitrary single 8-bit clean connection, which helps if you want to do
some kind of port redirection or tunnel. This is a strong trend for
many reasons, including the rise of firewalls and NAT.
Seth David Schoen <schoen at loyalty.org> | And do not say, I will study when I
Temp. http://www.loyalty.org/~schoen/ | have leisure; for perhaps you will
down: http://www.loyalty.org/ (CAF) | not have leisure. -- Pirke Avot 2:5
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