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Exchange 2013 not working through WAF

I configured WAF for Exchange based on these instructions:  https://sophserv.sophos.com/repo_kb/120454/file/Exchange%20WAF%20How%20to%209%202%20new.pdf

I use an AD CA so all of my certs are self-signed.  I also tried to generate new certs within Sophos UTM and neither is working.

When I go here: https://domain.com/owa, I receive this error:

Request blocked

The web application firewall has blocked access to /owa/auth/logon.aspx for the following reason:

No signature found

Not sure what is going on.  Any ideas?

UTM version is 9.210-20


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Parents
  • I think i found out, you have this under exceptions:

    Title: exception for OWA
    
    Skip: Static URL Hardening
    Virtual Webserver: “Exchange Autodiscover
    for paths:
    /ecp/*
    /ECP/*
    /ews/*
    /EWS/*
    /Microsoft-Server-ActiveSync*
    /oab/*
    /OAB/*
    /owa/*
    /OWA/*
    Advanced: Never change HTML during Static URL Hardening or Form Hardening


    Shoud it not be:

    Virtual Webserver: “Exchange OWA


    In the above settings?

    It works when I change that :-)

    -----

    Best regards
    Martin

    Sophos XGS 2100 @ Home | Sophos v20 Technician

Reply
  • I think i found out, you have this under exceptions:

    Title: exception for OWA
    
    Skip: Static URL Hardening
    Virtual Webserver: “Exchange Autodiscover
    for paths:
    /ecp/*
    /ECP/*
    /ews/*
    /EWS/*
    /Microsoft-Server-ActiveSync*
    /oab/*
    /OAB/*
    /owa/*
    /OWA/*
    Advanced: Never change HTML during Static URL Hardening or Form Hardening


    Shoud it not be:

    Virtual Webserver: “Exchange OWA


    In the above settings?

    It works when I change that :-)

    -----

    Best regards
    Martin

    Sophos XGS 2100 @ Home | Sophos v20 Technician

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