Network Level Content Blocking (UK)

Sean Donelan sean at
Thu Jun 7 15:58:26 UTC 2007

On Thu, 7 Jun 2007, James Blessing wrote:
> 1. Revocation of mere conduit status; by inspecting certain content and
> preventing access to it the ISP is doing more that just passing packets
> and is getting involved in the content.

Its not "content" blocking, its source/destination blocking.

While IWF may decide to list a particular source/destination based on its 
view of content, the network doesn't know look at or know what the 
content is and blocks anything at that source/destination address.  The 
"address" may be an application layer "address," i.e. a URL part rather 
than a network layer address.  But if the "address" is dynamically 
generated or changed, it may not have the same content.

Some cellular networks still have walled gardens, which only allow 
access to "approved" source/destinations. Again not based on content, but
based on business relationships with the cellular network operator.

Once you understand its the network isn't blocking "content" but rather 
an ever expanding list of sources/destinations, the real question is how 
can you be certain the bad stuff and good stuff will stay in separate 
places.  Or will the bad stuff continue to migrate elsewhere until you've
blocked most of the Internet, and only "approved" sources/destinations

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