Re: nat and dns

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On Thu, 2004-09-23 at 21:56, Aleksandar Milivojevic wrote:
> Quoting Dimitar Katerinski <train@xxxxxxx>
> Date: Fri, 24 Sep 2004 01:02:11
> 
> > Sorry, a little bit off topic, but I allways go red about such kind of crappy
> > rules:
> > 
> > > Use DNAT target.  In short what you need to do is:
> > > 
> > >    iptables -A FORWARD -m state --state NEW -j ACCEPT
> > 
> > Do you know what you just did? You've just allowed any kind of
> > connections, protocols to any port and from/to any destionation. Cute,
> > isn't it?
> 
> The above was an obvious typo that I made.  It should have read ESTABLISHED, not
> NEW, of course.  It kinda suprised me that it took so long before anybody noticed.

i regret not pointing out in my response that it was obvious to me that
this was a typo, and not any reflection on the poster in any way, shape,
or form.

> Maybe yes, maybe no.  The bottom line is that probability of somebody getting
> burned by not using tcp-flags (or simply syn) option is quite low.  But if
> that's going to make you so much happier person, I can start typing mile long
> examples instead of giving hints. 

precisely.  the rules that get posted here are to illustrate the point,
not our recommendations of what makes a perfect firewall.

i know as well as anyone that the easiest path is to lurk and wait for
typo to pounce upon.

-j

-- 
Jason Opperisano <opie@xxxxxxxxxxx>



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