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Subject: 
Re: Why do pictures in the guide detect as banner adds to Zone Labs/Check Point Integrity
Newsgroups: 
lugnet.admin.general
Date: 
Tue, 5 Sep 2006 19:21:10 GMT
Viewed: 
5464 times
  
There may be a simple explanation for that, although I would rate ZoneLabs as
pretty pedantic if this should prove true:

Due to a severe issue with a script that generates the guide thumbnail images, I
have replaced that script by a solution using the ImageMagick convert utility.
This is a frequently used and very well-behaving tool, but may modify the image
headers of the jpeg files to a point where your ZoneLabs gets the impression
that these images might be ads. First thing the script in question did was
re-generate _all_ the thumbnail images, so that might be why they are now all
blocked.

I can only assure you they aren't. While I am not particularly fond of too much
advertising imagery, I do not generally recommend setting personal firewalling
tools to blocking _images_ (graphics files). When it comes to javascript,
iframes, flash or anything - well, yes, that's certainly worth blocking in some
cases, but jpg, gif or png images should be considered clean as a rule of thumb.

Try finetuning of your ZoneLabs settings, please, because I am afraid we cannot
fine tune the graphics manipulation scripts for all the different personal
protection tools out there...

Regards,

Jerry



Message has 1 Reply:
  Re: Why do pictures in the guide detect as banner adds to Zone Labs/Check Point Integrity
 
(...) I think one reason Zone Labs tries to block certain advertising images may be to prevent using the image to collect information or something like that. Also annoying are some animated images, though those may be separately blockable. (...) (18 years ago, 5-Sep-06, to lugnet.admin.general)

Message is in Reply To:
  Re: Why do pictures in the guide detect as banner adds to Zone Labs/Check Point Integrity
 
(...) Uh, no idea! Does it give you any hint as to what would cause an image to be blocked? (18 years ago, 5-Sep-06, to lugnet.admin.general)

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