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Date:      Wed, 17 Sep 2008 15:53:50 +1000 (EST)
From:      Ian Smith <smithi@nimnet.asn.au>
To:        Annelise Anderson <andrsn@andrsn.stanford.edu>
Cc:        chris@smartt.com, mark@legios.org, James Seward <jamesoff@gmail.com>, freebsd-questions@freebsd.org
Subject:   Re: Apache 1.3 Problems
Message-ID:  <20080917153424.W439@sola.nimnet.asn.au>
In-Reply-To: <20080916143408.X16422@andrsn.stanford.edu>
References:  <20080916120019.4F06F10657DF@hub.freebsd.org> <20080917002608.H439@sola.nimnet.asn.au> <20080916143408.X16422@andrsn.stanford.edu>

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On Tue, 16 Sep 2008, Annelise Anderson wrote:
 > On Wed, 17 Sep 2008, Ian Smith wrote:
 > > On Tue, 16 Sep 2008 17:48:48 +1000 (EST) mark@legios.org wrote:
 > > > > On Tue, 16 Sep 2008 mark@legios.org wrote:
 > > 
 > > From a digest post, trimming a bit ..

Trimming lots this time ..

 > > Ok, ping and DNS look fine.  I (also) can traceroute your box this far:
 > > 
 > > 14  bbrb-isp.Stanford.EDU (171.64.1.155)  193.489 ms  193.562 ms  195.603
 > > ms
 > > 15  * * *
 > > 16  * * *
 > > 17  * * *
 > > 18  * *^C
 > > 
 > > I don't know whether you allow inbound traceroutes? but the question
 > > now is, how many routers between you and and bbrb-isp.Stanford.EDU ?
 > > 
 > > Can you show us a 'traceroute bbrb-isp.Stanford.EDU' from your machine?
[..]

 > I think port 80 is being filtered.  I have started talking to the admins.
 > The traceroute looks like this--
 > 
 > andrsn  2:23PM ~ % traceroute bbrb-isp.Stanford.EDU
 > traceroute to bbrb-isp.Stanford.EDU (171.64.1.155), 64 hops max, 40 byte packets
 >  1  goz-srtr-vlan910.Stanford.EDU (171.66.112.1)  0.610 ms  0.571 ms 0.711 ms
 >  2  * bbra-rtr.Stanford.EDU (172.20.4.1)  1.093 ms *
 >  3  * * *
 >  4  * * *
 >  ....and so forth indefinitely.

While talking to the admins, you might show them your traceroute too.  

It's a bit strange that bbrb-isp.Stanford.EDU responds to traceroutes 
from the outside, but not from your internal machine.  Of course it may 
be that the port 80 blocking (and/or traceroute blocking) is occurring 
on another router between you and bbrb-isp .. we can see at least two.

 > When I filter out non-tcp traffic nothing shows up at all.

Obviously mail works both ways.  tcptraceroute was also a good clue.

 > I have not tried another port yet, but will do that now.
 > 
 > 	Annelise

Happy hunting, Ian



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