nanog mailing list archives

RE: address spoofing


From: "Roeland M.J. Meyer" <rmeyer () mhsc com>
Date: Mon, 26 Apr 1999 01:50:17 -0700


The third edition "DNS and BIND" books, from O'Reilly <http://www.ora.com> also goes into detail on how to do it.

-----------------------------
Roeland M.J. Meyer
Morgan Hill Software Company, Inc.
http://staff.mhsc.com/~rmeyer
mailto://rmeyer () mhsc com
-----------------------------
You can always tell the people that are forging the new frontier.
They're the ones with flaming arrows sticking out of their backs and
looking a little charred around the edges.

 



-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of
Andrew Brown
Sent: Sunday, April 25, 1999 8:10 AM
To: Phil Howard
Cc: nanog () merit edu
Subject: Re: address spoofing


then, you can have (if you want) another bind listening on other
interfaces for other stuff.  like the "internal dns" server that you
mentioned.  or maybe a recursive, caching-only server that listens
only on 127.0.0.1.  of course...they can speak to each other if need
be.  :)

I tried 2 instances of BIND and they didn't work right.  One functioned
and the other played dead (very dead ... as in the process blocked and
would not wake up).  One needs 2 separate machines to get it to actually
work right (times the amount of redundancy desired).  If you know the
magic to make it work right, I'd sure like to know.  Maybe some kind of
lock somewhere?

the trick is to tell them specifically to listen on different
interfaces.  if you don't do that, then they will collide.  other
things (such as a different query or forwarding port, a separate pid
file, etc.) are also rather necessary.

i will attach a small shar file that paul vixie posted to the
bind-workers mailing list a little over a year and a half ago that
demonstrates exactly this.

-- 
|-----< "CODE WARRIOR" >-----|
codewarrior () daemon org             * "ah!  i see you have the internet
twofsonet () graffiti com (Andrew Brown)                that goes *ping*!"
andrew () crossbar com       * "information is power -- share the wealth."





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