FITUG e.V.
Förderverein Informationstechnik und Gesellschaft
FITUG e.V.Förderverein Informationstechnik und Gesellschaft |
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http://www.theregister.co.uk/content/6/16231.html
How to bypass Nazi filtering programs
By: Kieren McCarthy
Posted: 19/01/2001 at 17:02 GMT
Sick and tired of a nannying piece of filtering software preventing access to your favourites sites? Worry no longer.
A reader has informed us that using a technique that we'd covered in a spoof CNN story about Al Gore, you can bypass filter software. While we thought this was interesting, it has become a far greater issue. Following a story yesterday in which we mentioned filter program SurfControl, a different reader wrote to us explaining that when he installed the software, it prevented access to The Register.
[...]
So, what's the technique, you cry. Monkeying around with IP addresses. Find the IP address of the site you're after - not hard, just ping it - then switch the components into Hex, then back into Decimal (if this is gobbledegook to you, don't panic - there's a link coming up that explains it all in simple English).
Thus for The Register: Our IP is 212.113.16.234, which boils down to D47110EA in Hex. Which turns into 3564179690 in decimal. Thus, if you type in http://3564179690 into your PC, you will still arrive at our front page.
This technique is used by spammers and spoofers alike but it would seem that some filtering software hasn't thought of it. We haven't tested it on lots of different filter programs, so don't start moaning if it doesn't work on yours. However, if there are any young kids out there that need to get to that porn and the filter software is stopping them, we'd be interested in your results (a joke! a joke! [no, but seriously kids...]).
So there you have it. Oh, yeah, the link. It's here. As yet we haven't seen an automated system for creating these numbers, although it would be very easy to set up and put online.
Just thought y'all might like it. ®
Update Tell a lie. We have found a conversion program. And another had been knocked up by a reader. These are them:
http://www.fichtner.net/tools/ip2dword/?ip=212.113.16.234 http://www.douglas-adams.com/ob (don't swamp it though)