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796 Views 5 Replies Latest reply: Feb 11, 2013 9:21 AM by Regis RSS
Brian Pedersen Newcomer 3 posts since
Feb 4, 2013
Currently Being Moderated

Feb 4, 2013 5:42 AM

Webgateway vs. siteadvisor

Hi,

 

I dont know if this is the right place for this post.

 

For about 2 years ago we bought 2 web gateway 7 in our organization for scanning web pages. They where set up a McAfee technician and it looked fine. But over time, they started blocking many web pages witch was safe. So I tried to test the pages with http://www.siteadvisor.com/  and it did'nt find any danger. It will eventually become a major problem because our whitelist to be miles long and the websides might be unsafe later on, but automatically approved due to our whitelist.

 

 

So my question is, you can see more specifically what the web gateway find unsafe and should url filter not be the same at the Web gateway and http://www.siteadvisor.com?

 

 

Webgateway Anti-Malware Versions:

Last Update: 100 minutes ago

Gateway Engine: 7001.1202.1796

Gateway DAT's: 1563

Engine: 5400.5001

DATs: 6975

 

Best regard

Brian Pedersen

  • fschulte Apprentice 57 posts since
    Nov 16, 2011
    Currently Being Moderated
    1. Feb 4, 2013 6:50 AM (in response to Brian Pedersen)
    Re: Webgateway vs. siteadvisor

    Hi Brian!

     

    Can you give an example URL and the results you see using Web Gateway and Site Advisor?

     

    In general, you should see the same results Though, the configuration of Web Gateway (e.g. if local database and/or cloud is used;  usage of DNS in cases that the URL is uncategorized) or some delay when the database is updated could sometimes lead to slightly different results.

     

    Ciao

    Felix

  • fschulte Apprentice 57 posts since
    Nov 16, 2011
    Currently Being Moderated
    3. Feb 5, 2013 3:16 AM (in response to Brian Pedersen)
    Re: Webgateway vs. siteadvisor

    Hi Brian!

     

    I just checked both URLs and both show up as Green/Minimal Risk but have no categories assigned.

    In this case MWG applies a heuristic (enabled by default) which will do a DNS lookup and will categorize the returned IP address. If the site is hosted on a suspicious web server (because other suspicious sites are also hosted on that server) the final reputation result will also be suspicious/medium risk/yellow. This is what happens in your case.

     

    E.g. Resolving frismus.nu I get 194.182.128.105. Categorizing then this IP through Site Advisor or trustedsource.org I get a yellow result.

     

    If this heuristic shows to many false positives you can disable it: Go to Policy -> Settings -> URL Filter and disable the checkbox (called something like) "Do forward DNS lookup".

     

    Ciao

    Felix

  • Regis Champion 457 posts since
    Oct 6, 2010
    Currently Being Moderated
    5. Feb 11, 2013 9:21 AM (in response to Brian Pedersen)
    Re: Webgateway vs. siteadvisor

    This is a timely thread as I'd encountered several of these head scratchers myself of late.

     

    As Felix said, if the URL is uncategorized,   the reputation of the IP is used for categorization it seems.  In my case, I was seeing things getting categorized as Malicious Sites in my log files, but checking at  https://www.trustedsource.org/en/feedback/url   it showed the URL in my logs as uncategorized.  Sure enough that same URL entered as its corresponding IP address, however,  showed the same categorization I saw in my logs.

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