It occurs to me that perhaps they are testing for a file download, rather than the existence of a named window or a particular frame. I wonder if it wouldn't be possible to have squidGuard "request" the file, while redirecting the file load to some scurrilous ip address - say 10.0.0.0, or better yet it's randomized equivalent. Then the server would think it has sent the file off to somewhere, while the proxy doesn't have to cache the garbage, and the user doesn't see it on their screen.
Just two pennies worth. Mike On Wednesday, February 27, 2002, at 09:54 AM, Karl Stevens wrote: > Hi Rick, > > That's interesting.. was there a popup/under ad for the site? (Maybe > they > use some Javascript to test for the existence of a named window?) Or > perhaps > the ad is showing up in a frame? > > Can you give some URLs for the sites that do this, so we can test them? > > I've got ad blocking running here (using my own filters, not the > downloadable > lists), and haven't noticed anything out of the ordinary.. > > -Karl > > On Wednesday 27 February 2002 10:09, Rick Matthews wrote: >> Kevin, >> >> You can block them across the enterprise using squidGuard and >> redirecting to a 1 pixel by 1 pixel transparent gif file. (I've >> attached >> one for your use.) >> >> I've been fairly successful in eliminating the majority of those <Your >> blinking monkey is not optimized, click here for $1,000,000 today!> >> ads. >> >> The problem that I was mentioning is that I've been to a couple of >> sites >> this week that are returning a blank page unless I turn off my ad >> blocking. These are pages that worked fine in the past. >> >> I visited a new site (first visit for me) within the past couple of >> weeks and the page I received said something to the effect: >> ----------------------- >> *** You have been diverted to this page instead of the page you >> requested. *** >> You are apparently running software that is blocking the appearance of >> ads in web pages. The income that I receive from ad click-throughs >> partially offsets my cost of providing this web site, and allows me to >> offer it free to you. If you would like to visit my web site please >> turn >> off your ad-blocking software and refresh this page. >> ----------------------- >> >> I turned off the ad block, hit refresh and it worked. >> >> I think we'll see that spreading, and I'm wondering how they are doing >> it. >> >> Rick >> >> >> -----Original Message----- >> From: Kevin White [mailto:[EMAIL PROTECTED]] >> Sent: Wednesday, February 27, 2002 10:39 AM >> To: Rick Matthews >> Cc: [EMAIL PROTECTED] >> Subject: Re: Block my ads? Can't see my page! >> >> >> Rick, >> >> Though I've not tried this, the best thing I've heard to do is to use >> your >> hosts file to redirect all those banner ad sites to your local machine. >> Since the name resolves to localhost and the file won't exist, the ads >> just >> won't load. >> >> You can read more about this at this link. >> >> http://www.ecst.csuchico.edu/~atman/spam/adblock.shtml >> >> You can obtain a good lists of hosts there or you can do google searchs >> for >> more recent files like this one which is as current as december. >> >> http://everythingisnt.com/hosts.html >> >> >> Hope this helps, >> >> >> -- >> Kevin White, Linux+, A+ > > ---------------------------------------- > Content-Type: image/gif; charset="iso-8859-1"; name="1x1.gif" > Content-Transfer-Encoding: base64 > Content-Description: > ---------------------------------------- > --- > [This E-mail scanned for viruses by Declude Virus] > > --- [This E-mail scanned for viruses by Declude Virus]
