Blocking a URL

[srehrlich-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org (Scott Ehrlich)]

On Sat, Mar 27, 2010 at 2:33 PM, David Kramer <david-8uUts6sDVDvs2Lz0fTdYFQ at public.gmane.org> wrote:
> Jerry Feldman wrote:
>> Every once in a while I get a new Firefox window, primarily
>> content.pulse360.com. I have tried to use adblock to block this URL
>> explicitly (*.pulse360.com). It's just annoying. dig pulse360.com
>> I certainly could block the IP address in my firewall, but I want to be
>> able to block the alpha URL if they are using rotating IP addresses.
>
> You can put an entry in /etc/hosts to point that hostname to 127.0.0.1,
> which at least will block access to the server.
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The fundamental question, though, is what is causing that page to pop
up?    What OS? (I presume Linux based on this email list, but only
you can answer definitively).    Did it happen when you got the
machine, or recently, or when?

Is it Firefox that came with the OS (if a Linux version), or obtained
from mozilla's web site, or possibly some other source (maybe an
application you have installed it)?   Maybe your ISP made some change
or installed it?

Do your system's event logs reflect when this might have started?

I just as well presume aim to fix problem at the source rather than
trying to place temporary fixes around an existing problem.

Scott