[ntp:questions] Re: abuse or bug ?

Henk Penning henkp at cs.uu.nl
Fri Jan 28 23:47:53 UTC 2005

In <cte0qc$kpp$1 at dewey.udel.edu> "David L. Mills" <mills at udel.edu> writes:

>Can you confirm the version number of the apparently abusive client? In 
>testing here we occasionally have broken test versions, but these are 
>never intended to escape the local test environment and should never 
>have been put up for public grab.
>The client you highlight is not reachable from here for ping or ntpq. If 
>it was reachable by ping but not for ntpq and not returning a ICMP 
>destination port unreachable, I would suspect a Netgear client.


  Via network staff at northwestern.edu and cs.northwestern.edu I contacted
  the guy who maintains the box [s-birrer (at) northwestern edu] ;
  He gave me these specs:

    .... I'm using plain out of the box ntp software on a Linux Gentoo
    running on a SunBlade. ...

    client   : (in cs.northwestern.edu)
    hardware : Sun, SunBlade 150
    operating system :
      Linux gandalf 2.4.26-sparc-r2 #14 Wed Sep 22 15:27:12 CDT 2004 sparc64
      sun4u TI UltraSparc IIe (Hummingbird) GNU/Linux
    ntp      : ntp  4.2.0-r2
    config :
      server pool.ntp.org
      driftfile       /var/lib/ntp/ntp.drift
      restrict default notrust nomodify

  He sent me some diagnostics:

sempi at gandalf sempi $ ntpdc -c pee -c loo -c sysi
     remote           local      st poll reach  delay   offset    disp
=doei.cs.uu.nl 16   64    0 0.00000  0.000000 0.00000
offset:               0.000000 s
frequency:            0.000 ppm
poll adjust:          0
watchdog timer:       69165 s
system peer:
system peer mode:     unspec
leap indicator:       11
stratum:              16
precision:            -19
root distance:        0.00000 s
root dispersion:      1.03746 s
reference ID:         []
reference time:       00000000.00000000  Thu, Feb  7 2036  0:28:16.000
system flags:         auth monitor ntp kernel stats 
jitter:               0.000000 s
stability:            0.000 ppm
broadcastdelay:       0.003998 s
authdelay:            0.000000 s

sempi at gandalf sempi $ ntpq -p
remote          refid      st t when poll reach   delay   offset jitter
doei.cs.uu.nl   .RSTR.     16 u    -   64    0    0.000    0.000 4000.00

  This is all the info I have.



  Henk Penning
----------------------------------------------------------------   _
Henk P. Penning, Computer Systems Group       R Uithof CGN-A232  _/ \_
Dept of Computer Science, Utrecht University  T +31 30 253 4106 / \_/ \
Padualaan 14, 3584CH Utrecht, the Netherlands F +31 30 251 3791 \_/ \_/

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