[LINK] Filter to cause World Wide Wait

Scott Howard scott at doc.net.au
Fri Oct 31 05:51:19 EST 2008


On Thu, Oct 30, 2008 at 11:41 AM, Kim Holburn <kim.holburn at gmail.com> wrote:

> It sounds to me like these filters they are planning are like proxies
> and filter on domain name.  Does that mean using a URL with and IP
> address would by-pass them?


Sometimes, but normally not.

The problem is that if you don't give a hostname to most websites they will
not give the site you're after, but instead a "default" site or an erorr as
they are not sure which site you're after (one IP might host dozens or even
hundreds of sites).

Some of the bigger sites will do 1 site per IP so this will work, but in
those cases the filter lists will normally include the IP address itself as
a blocked site as well.

Others will redirect the IP address to a hostname, so it still won't work
(eg, www.smh.com.au is 203.26.51.42, which redirects you to
www.fairfax.com.au by name).

Even then, most of the images/etc on the site will be loaded from URLs
including a hostname, which will still be blocked.

  Scott.


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