nanog mailing list archives

Re: black listing of web traffic


From: Chris Campbell <Chris.Campbell () nebulassolutions com>
Date: Tue, 9 Feb 2010 19:49:56 +0000

I know that cisco either are or have integrated the IronPort  
reputation service into their IPS devices, maybe a check on www.senderbase.org 
  could help.

Chris Campbell
---------------------

On 9 Feb 2010, at 19:36, "Andrey Gordon" <andrey.gordon () gmail com>  
wrote:

Hi list

I have a problem that I can't seem to find a solution to yet. My  
student
network is being NATted out and anyone who's on that network had  
troubles
accessing random websites.
For example, going to www.apple.com or www.facebook.com would work  
great,
but store.apple.com would either not load or take forever to open up.

I've had that problem last week and thought I tracked it down to the  
NAT ip
being black listed with one of the span black lists. Even though  
that IP is
not used for mail out, that somehow seemed to affect it. Changing it  
to a
different one seemed to solve the problem and I got that original  
address of
the list in the mean time. Changed it back and everything was well,  
until
today.
Same symptoms, but now I don't see us listed anywhere.
The best description of the symptoms seems to be that that IP is rate
limited or something.

Anyone seen that? Are there any blacklists for web access?

PS. I checked everything under my control and i don't see a bottle  
neck
anywhere or anything like and IPS working up or something....


-----
Andrey Gordon [andrey.gordon () gmail com]


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