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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 Sep 27, 2011, 11:42 PM

    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 Sep 28, 2011, 12:21 AM

      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 Sep 28, 2011, 12:28 AM

        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 Sep 28, 2011, 1:14 AM

          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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