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Web filtering with SSO (transparent mode) and AD integration - getting a login prompt?

Dozer

Hi all,

I have the UTM setup to web filter using AD integrated SSO in transparent mode (not full transparent).

All seems well and it's working correctly authenticating against groups in AD. All apart from one server...

The server is Windows 2012 R2 and using Chrome browser I end up with a logon prompt instead of NTLM pass through.
When I use IE 11 it seems to work correctly.

Other Desktops - Windows 8.1 and Windows 7 work fine just using Chrome.

Any ideas why this server would be having issues and throwing a logon prompt pointing to the UTM interface /auth... ?

 

Edit: In the web filtering live logs I can see the Chrome URL request being blocked but (as expected) the "user" and "domain" strings are blank.

user=""  etc.

 

Any ideas on this ?

 

Thanks,

Doz



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  • 0

    What do you see in the User Authentication log when this happens?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    I just checked it.. the log only shows my actually logging on to the Web admin portal... nothing related to logon failures.

    Chrome threw a logon prompt when I accessed a web page.

     

    The webfilter live log shows a blank user="" and domain="" instead of the correct username and AD domain.

    Very strange..

  • 0 in reply to Dozer

    What does the log in the server show?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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