Scan DNS with BitMask /21

  • AdmrsTER

    AdmrsTER - 2013-11-06


    When i use "synchronise network against dns" with a /24 network : no problms
    When i use "synchronise network against dns" with a /21 network : the request search 2 minutes and stop without errors messages, logs and no results !

    Is it possible to scan network against dns with a /21 BitMask ?


  • AdmrsTER

    AdmrsTER - 2013-11-07

    Actually, it works with some networks /21, but not all.
    It doesn't work when the network is on some specific vlans.
    But it works by snmp !

  • Marc Uebel

    Marc Uebel - 2013-11-07

    Thanks a lot for reporting that.
    The "synchronise network against dns" vía web is only supported for networks with a bitmask >=22. In the actual version it is enabled for bigger networks by mistake and will be disabled with next patch. To scan networks with smaller bitmask use the scpript which you find in /usr/share/gestioip/bin.
    SNMP scan is working because it scans only the active IPs and not the whole networks.


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