black listing of web traffic

Jay Hennigan jay at
Tue Feb 9 21:56:07 UTC 2010

Andrey Gordon wrote:
> Can't find my IP on any of the black lists. Don't have any proxies. Sites
> that behave poorly are consistent. That is to say that,
> would always come up without an issue, but,
> know, don't ask, students),
> would consistently take forever to come up.
> Just wanted to check of rate-limiting web clients is a common practice
> nowdays in the industry. If it's not, it's probably an unlikely cause of my
> troubles...

It could be that the problem sites have some form of load balancer that 
has an issue keeping state on multiple sessions from the same IP.

You mentioned that changing the source IP fixed it.  Is this a temporary 
fix that breaks after several users access the sites from the new IP?

Jay Hennigan - CCIE #7880 - Network Engineering - jay at
Impulse Internet Service  -
Your local telephone and internet company - 805 884-6323 - WB6RDV

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