Re: Traceroute Anomaly

From: Eli Dart (dart_at_nersc.gov)
Date: 08/20/04

  • Next message: Gregory Kuhn: "Re: Traceroute Anomaly" 
    To: Gregory Kuhn <freebsd-net@lists.ctch.net>
Date: Fri, 20 Aug 2004 10:30:09 -0700

    In reply to Gregory Kuhn <freebsd-net@lists.ctch.net> :

    > Hello,
    >
    >
    > I have discovered an anomaly (I am sure it was discovered long
    > ago) when trying to traceroute to my FBSD 4.8 and 4.9 servers. Here are
    > the details.

    Have you set sysctl net.inet.udp.blackhole=1 ?

    If so, the FreeBSD box will drop the traceroute UDP probes and you'll
    never see the host itself in traceroute output.

                    --eli

  • Next message: Gregory Kuhn: "Re: Traceroute Anomaly"