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2465 Views 3 Replies Latest reply: Aug 9, 2010 11:33 PM by michael_schneider RSS
jspanitz Apprentice 118 posts since
Nov 4, 2009
Currently Being Moderated

Jul 30, 2010 3:32 PM

BING Maps not loading

Using McAfee Web Gateway 6.8.7 build 7612, bing maps fail to load using IE or Firefox.  We've built a whitelist that exempted everything and they still do not load.  Also tried adding bing.com to Bypass SSL Scanner setting under HTTPS Proxy and Bypass ICAP Server under ICAP Services - HTTP Proxy.  We are using the Web Gateway as an explicit proxy and WCCP.

 

Anyone know how to get BING maps to work?

  • michael_schneider McAfee SME 424 posts since
    Nov 14, 2009
    Currently Being Moderated
    1. Aug 4, 2010 9:33 AM (in response to jspanitz)
    Re: BING Maps not loading

    They are loading fine here. So I would assume that this subject to your policy.

    Not sure if you are blocking any scripts, or filtering Business or Software/Hardware in URL Filter. Are you blocking jpegs?

     

    You could also try whitelisting virtualearth.net, as this is the host where the images are comming from.

     

    thanks,

    Michael

     

     

    Message was edited by: Michael Schneider on 04/08/2010 16:33:42 CEST

    --
    CISSP
    Sr. Product Manager Web Security
    Network Security BU

    **no personal messages please, unless requested**
  • michael_schneider McAfee SME 424 posts since
    Nov 14, 2009
    Currently Being Moderated
    3. Aug 9, 2010 11:33 PM (in response to jspanitz)
    Re: BING Maps not loading

    Content Type adaption, is part of Media Type Security.

    In case you have a malformed webserver config, and it send an exe as txt according to the mime type, the usual web gateway will let it go through and you can happily download what ever you want

    MWG is not trusting headers or file extensions, it performs its magic bytes checks and will try to correct the mdeia type. I assume that in this case, they use some proprietary media type, such as a special XML which is converted to plain xml (just an assumption).

    For example, in case a response contains:

     

    • Content-Type: application/x-Silverlight-XML
    • MWG now looks ito the file and sees: <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
    • The above is plain standard XML and MWG will therefore make sure the mime info is correct and will change it to: Content-Type: text/xml

    the above is know as content type adaption in MWG and in case an application is built to require the wrong header, then situations like yours happen.

    best,
    Michael

    --
    CISSP
    Sr. Product Manager Web Security
    Network Security BU

    **no personal messages please, unless requested**

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