Firewall Wizards mailing list archives
Re: Blocking IM via DNS
From: Crispin Cowan <crispin () wirex com>
Date: Thu, 01 Nov 2001 20:53:18 -0800
Kenneth Porter wrote:
In my experience, this effect only happens if you have javascript enabled. Disable javascript and try it again.On Tue, 30 Oct 2001 11:51:39 -0500, robert_david_graham wrote:You may also find this this can save bandwidth and increase privacy. For example, add an entry for "*.doubleclick.net" that points somewhere else. This will prevent user's machines from downloading advertisement graphics as well as prevent tracking of user's activities by DoubleClick through webbugs. (Yes, you can use "*" as a DNS name in BIND and Microsoft DNS servers). I have about 30 such entries on my personal DNS server to block advertisements.The problem here is that some content sites only supply content *after* they've received confirmation from the ad site that you've downloaded the ad. One site I read shows nothing but empty frames unless I allow the ad URL's through.
Crispin -- Crispin Cowan, Ph.D. Chief Scientist, WireX Communications, Inc. http://wirex.com Security Hardened Linux Distribution: http://immunix.org Available for purchase: http://wirex.com/Products/Immunix/purchase.html _______________________________________________ firewall-wizards mailing list firewall-wizards () nfr com http://list.nfr.com/mailman/listinfo/firewall-wizards
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- Re: Blocking IM via DNS Crispin Cowan (Nov 02)