[Bug 193689] New: [PATCH] Add ICMP timestamp sysctl

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193689

            Bug ID: 193689
           Summary: [PATCH] Add ICMP timestamp sysctl
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: Needs Triage
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: accornehl at gmail.com
                CC: benno at FreeBSD.org, markj at FreeBSD.org

Created attachment 147384
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=147384&action=edit
ICMP timestamp sysctl patch

EMC Isilon OneFS has been using this patch for a few years, based on the
OpenBSD patch: http://marc.info/?l=openbsd-bugs&m=101994870923315&w=3

Network security scanners check for the presence of ICMP timestamps, so this
patch adds a switch to disable ICMP timestamp replies and enable deploying in
those environments.

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