Comments on: Add ?NoCleanFeed or &NoCleanFeed to Blacklisted URLs to Bypass Mandatory Australian Internet Censorship http://www.orzeszek.org/blog/2009/12/20/add-nocleanfeed-or-nocleanfeed-to-blacklisted-urls-to-bypass-mandatory-australian-internet-censorship/ An inchoate upside-down perspective Wed, 28 Jul 2010 00:34:01 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Chris http://www.orzeszek.org/blog/2009/12/20/add-nocleanfeed-or-nocleanfeed-to-blacklisted-urls-to-bypass-mandatory-australian-internet-censorship/comment-page-1/#comment-7758 Chris Mon, 25 Jan 2010 18:19:01 +0000 http://www.orzeszek.org/blog/?p=958#comment-7758 @Peter: That depends. Some filters work by sending clients the IP address of the filter server when a client makes a DNS request that relates to blocked content. For that to work, the client has to be configured to use the filter’s DNS server. And changing the DNS configuration on the client circumvents this type of filter. However, there are other filtering technologies that don’t rely on DNS spoofing. The best of these relies on BGP. It redirects traffic to IP addresses that host blocked content so that that traffic passes through the filter. The filter then analyses that traffic and decided whether it is meant to be blocked. Traffic to IP addresses other than those hosting blocked content never even passes through the filter. Because that method doesn’t rely on DNS spoofing, you can’t bypass this method by changing the DNS configuration on the client. But you can still circumvent the filter by using a VPN service, Tor, or the method described in this post. @Peter: That depends. Some filters work by sending clients the IP address of the filter server when a client makes a DNS request that relates to blocked content. For that to work, the client has to be configured to use the filter’s DNS server. And changing the DNS configuration on the client circumvents this type of filter.

However, there are other filtering technologies that don’t rely on DNS spoofing. The best of these relies on BGP. It redirects traffic to IP addresses that host blocked content so that that traffic passes through the filter. The filter then analyses that traffic and decided whether it is meant to be blocked. Traffic to IP addresses other than those hosting blocked content never even passes through the filter.

Because that method doesn’t rely on DNS spoofing, you can’t bypass this method by changing the DNS configuration on the client. But you can still circumvent the filter by using a VPN service, Tor, or the method described in this post.

]]> By: Peter http://www.orzeszek.org/blog/2009/12/20/add-nocleanfeed-or-nocleanfeed-to-blacklisted-urls-to-bypass-mandatory-australian-internet-censorship/comment-page-1/#comment-7757 Peter Mon, 25 Jan 2010 17:48:06 +0000 http://www.orzeszek.org/blog/?p=958#comment-7757 So basically if you set your own DNS servers (takes about 10 seconds to do) the filter no longer works? Why bother with this filter? Why bother making it manditory and not opt-in? This is just stupid Conroy. So basically if you set your own DNS servers (takes about 10 seconds to do) the filter no longer works? Why bother with this filter? Why bother making it manditory and not opt-in? This is just stupid Conroy.

]]> By: Dave http://www.orzeszek.org/blog/2009/12/20/add-nocleanfeed-or-nocleanfeed-to-blacklisted-urls-to-bypass-mandatory-australian-internet-censorship/comment-page-1/#comment-7527 Dave Wed, 20 Jan 2010 22:24:24 +0000 http://www.orzeszek.org/blog/?p=958#comment-7527 The government is stupid. If you're going to waste my takes doing something inane, do it properly. The government is stupid. If you’re going to waste my takes doing something inane, do it properly.

]]> By: Chris http://www.orzeszek.org/blog/2009/12/20/add-nocleanfeed-or-nocleanfeed-to-blacklisted-urls-to-bypass-mandatory-australian-internet-censorship/comment-page-1/#comment-7506 Chris Wed, 20 Jan 2010 12:05:05 +0000 http://www.orzeszek.org/blog/?p=958#comment-7506 I don’t know why I didn’t think to include a bookmarklet. I’ll update the post with one as soon as I have a few minutes. I don’t know why I didn’t think to include a bookmarklet. I’ll update the post with one as soon as I have a few minutes.

]]> By: mlambie http://www.orzeszek.org/blog/2009/12/20/add-nocleanfeed-or-nocleanfeed-to-blacklisted-urls-to-bypass-mandatory-australian-internet-censorship/comment-page-1/#comment-7498 mlambie Wed, 20 Jan 2010 06:58:34 +0000 http://www.orzeszek.org/blog/?p=958#comment-7498 So simple, so effective. Excellent! So simple, so effective. Excellent!

]]> By: woowoowoo http://www.orzeszek.org/blog/2009/12/20/add-nocleanfeed-or-nocleanfeed-to-blacklisted-urls-to-bypass-mandatory-australian-internet-censorship/comment-page-1/#comment-7497 woowoowoo Wed, 20 Jan 2010 05:58:58 +0000 http://www.orzeszek.org/blog/?p=958#comment-7497 there's an opening here for a bookmarklet... there’s an opening here for a bookmarklet…

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