Theoretically, I believe the IP thing vs domain thing has been solved now. If we are willing to put aside the evilness of filtering for a second and limit the issue to the technical implementation, I know there are some implementations that use a two-phase filter to deal with IP issues (I think this might include China's)
They take the list of block domains, and resolve a set of IPs for them. These IPs are then hijacked via some BGP trickery (although someone more clueful on that aspect would need to describe how) to the filtering servers. These filtering servers, although they receive request/response for all of the hosts that map to the IPs, only do the actual filtering on the basis of domain or URL subpaths. In other words.. If you aren't on a red IP, you never go through filtering at all. If you are a green host on a red IP, your request is slower but still works. If you are a green host with a red subsection, the request is slower but still works. I gather though (since this involves network-fu) that this isn't the sort of technology you can just drop a linux box into the network to implement. But it would seem to at least mitigate some of the computation costs to implement the filtering. Of course, this says nothing whatsoever about the accuracy of the filtering, just that your inaccurate blocking can be implemented with a lower computational cost. Adam K 2008/10/25 Robert Barnett <[EMAIL PROTECTED]>: > > I am really most concerned about all the side effects of filtering that we > are yet to uncover. > > For example: > > If I hosted on a dynamic IP, although I have been assured that it is > unlikely, how would I deal with the event that my IP has been blocked to > other users? Could the federal government consider not blocking domestic > addresses and actually enforce Australian law on our own turf? What if I ran > a VPN on port 80? How do I even know that I'm on the blocked list? > > What about lesser known sites such as the Internet WayBack machine? Would > any objectionable material result in a blanket ban? > > > Robbie > > > > -- > SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ > Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html > -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
