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Date:      Sat, 07 Sep 2002 09:13:12 -0700
From:      Kent Stewart <kstewart@owt.com>
To:        Jeremy Prior <jez@netcraft.com>
Cc:        "Marc G. Fournier" <scrappy@hub.org>, Linh Pham <lplist@closedsrc.org>, freebsd-questions@FreeBSD.ORG, Webmaster <webmaster@netcraft.com>
Subject:   Re: Netcraft no longer sees FreeBSD ... ?
Message-ID:  <3D7A2598.5050803@owt.com>
References:  <20020906151222.T72523-100000@earth.hub.org> 	<20020906201048.GB77907@xor.obsecurity.org> <1031404589.22782.38.camel@chagford.netcraft.com>

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Jeremy Prior wrote:

> On Fri, 2002-09-06 at 19:21, Marc G. Fournier wrote:
> 
>>	From what I've seen in posts by other FreeBSDer's, this seems to
>>be a relatively common thing, with someone mentioning it had to do with a
>>recent upgrade @ netcraft ...
>>
> 
> Nope.  Our interactive OS determination machine is still running
> 4.3-STABLE, as is the uptime determination machine.
> 
> On Fri, 2002-09-06 at 20:03, Linh Pham wrote:
> 
>>Do you have TCP_DROP_SYNFIN or RANDOM_IP_ID compiled into your kernel
>>or enabled in rc.conf and/or sysctl?
>>
>>I compiled my kernel with both and NetCraft stopped recognizing the OS
>>as FreeBSD and I haven't had a chance to change it back.
>>
> 
> Setting RANDOM_IP_ID would definitely have an effect on OS determination
> - a random IP ID is _one_ of the factors used in differentiating between
> OpenBSD and the other *BSDs.
> 
> We've not looked in detail as to why FreeBSD-4.6+ systems are coming up
> as unknown (not all of them are), but as we run FreeBSD here, it's a
> fairly safe bet that FreeBSD determination will continue into the
> foreseeable future...
> 
> (PS, if anyone knows what changes there are in the 4.6+ networking code,
> please let us know - it'd definitely speed up getting this fixed...)


Netcraft stopped identifying my local FreeBSD site around 4.5. It is 
mostly used to test pages before I upload them to my ISP and to store 
large numbers of graphics images that would exceed my ISPs size limit. 
I did have TCP_DROP_SYNFIN set but removing it when it was first 
mentioned on this thread did not change anything. I also do not have 
RANDOM_IP_ID set.

I am running ipfw+natd and I wonder if the way some rules were handled 
has changed and is affecting things.

Kent

-- 
Kent Stewart
Richland, WA

http://users.owt.com/kstewart/index.html


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