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DNS request to CP Cert subject returns VC IP

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  • 1.  DNS request to CP Cert subject returns VC IP

    Posted Jan 30, 2018 06:16 AM

    When a DNS request is done from any SSID (even with no Captive Portal and Unrestricted Network access) to the hostname, which is also used as subject for the Captive Portal certificate, the AP seems to always return the VC IP address.

    The used certificate has a subject which is actually the host name of another server, making it unreachable from any wireless client.

    The DNS server for the clients is not the VC, but a Windows server.

     

    Is this behaviour by design?

     

     



  • 2.  RE: DNS request to CP Cert subject returns VC IP
    Best Answer

    EMPLOYEE
    Posted Jan 30, 2018 06:28 AM

    Yes.  That is the how the captive portal does redirection and authentication.  You need to give the VC its own CN (Common Name) to prevent this from happening.



  • 3.  RE: DNS request to CP Cert subject returns VC IP

    Posted Jan 30, 2018 09:57 AM

    Thx Colin.