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    Nmap not ping scanning local network

    Scheduled Pinned Locked Moved General pfSense Questions
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    • J
      jpforte
      last edited by

      Hi,

      I just noticed that on all pfsense 2.0 machines I have installed that I cannot ping scan the local network machines everything but the local configured port fails. I can however ping them machines properly.

      example: ping 172.16.0.128  (works, shows pings)

      However: nmap -sP 172.16.0.128 (says not responding to pings)

      when I do the whole subnet: nmap -sP 172.16.0.0/24 (takes forever then reports that 172.16.0.1 is the host that is up).

      Thoughts?!

      Jim

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      • T
        tommyboy180
        last edited by

        Just a thought: nmap tries to detect your primary interface and uses the address that you are scanning but if that doesn't work try -S to specify an interface. That should work.

        -Tom Schaefer
        SuperMicro 1U 2X Intel pro/1000 Dual Core Intel 2.2 Ghz - 2 Gig RAM

        Please support pfBlocker | File Browser | Strikeback

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        • C
          cmb
          last edited by

          nmap -sP is not the same as 'ping', use 'nmap -sP -PI' if you want ICMP echo requests.

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          • T
            tommyboy180
            last edited by

            Even better.

            -Tom Schaefer
            SuperMicro 1U 2X Intel pro/1000 Dual Core Intel 2.2 Ghz - 2 Gig RAM

            Please support pfBlocker | File Browser | Strikeback

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