Block Users from Accessing Search Engine Caches
I want to be able to block access to the big three search engines cached webpages feature. I found a reference at Bluecoat, https://kb.bluecoat.com/index?page=content&id=KB5090&actp=RSS, and I setup up cache blocking for Google and Bing. However, I can't get the Yahoo version to work. I have googled and searched opendns for this, but to no avail. Any suggestions?
As you can see from the KB article you linked to, Yahoo cache is hosted under an IP address, not under a DNS name. Therefore it is most likely not possible to block the Yahoo cache with DNS methods. IP addresses do not require a DNS lookup, therefore this does not go to OpenDNS. You'll have to use a different method, e.g. IP address blocking with your router or your computer or with a proxy server.
Thank you, adding it to my router is what I did. I added to the idea bank requesting that these features be added (https://support.opendns.com/entries/25479815-Family-Shield-product-that-blocks-search-thumbnails-and-caches-).
The sub-domains that I have been able to research from OpenDNS forums and black-list are:
cc.bingj.com, ssl.bing.com, ts1.explicit.bing.net, ts1.mm.bing.net, ts2.explicit.bing.net, ts2.mm.bing.net, ts3.explicit.bing.net, ts3.mm.bing.net, ts4.explicit.bing.net, ts4.mm.bing.net, ssl.bing.com,
encrypted-tbn.google.com, encrypted-tbn.l.google.com, encrypted-tbn0.google.com, encrypted-tbn1.google.com, encrypted-tbn2google.com, encrypted-tbn3.google.com, encrypted.google.com, tbn.l.google.com, webcache.googleusercontent.com
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