Re: Blocking IM via DNS

[Crispin Cowan <crispin () wirex com>]

Kenneth Porter wrote:

> 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.
In my experience, this effect only happens if you have javascript 
enabled. Disable javascript and try it again.

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


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