[ntp:questions] Re: D-link and hardcoded ntp servers

Carl Byington carl at five-ten-sg.com
Thu Apr 13 14:40:40 UTC 2006


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On Sat, 08 Apr 2006 01:14:29 +0000, Simon Lyall wrote:

> See:

> http://people.freebsd.org/~phk/dlink/

> I notice that most of the servers that are hardcoded in are from the
> public list but many of the have access limits.

If DLink were just a little bit smarter, they would have used the
stratum-2 list rather than the stratum-1 list, and in that case would have
ended up hammering on my server. I called their Irvine offices, and
eventually spoke to their corporate counsel who seems to be in "deny
everything" mode. They have no intention of doing any sort of recall of
those boxes.

DLink uses 192.152.81.0/24 at their Irvine offices, and 

ntpq -n -c peers 192.152.81.100
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 +64.7.210.145   216.218.254.202  2 u  129  256  377    7.710    5.768   4.910
 *132.239.1.6    .GPS.            1 u   19  256  377   18.980   -0.428   0.870


DLink also uses 64.7.210.128/27, and 

ntpq -n -c peers 64.7.210.145
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 +216.218.192.202 .GPS.           1 u  889 1024  377   19.214   -1.641   0.192
 *216.218.254.202 .CDMA.          1 u    8 1024  377   16.256   -1.116   0.699
 +207.200.81.113  .ACTS.          1 u  754 1024  377   10.533    0.369   3.415
 -69.25.96.13     .ACTS.          1 u  464 1024  377   16.109   -7.599   0.084
  66.150.161.133  .INIT.         16 u    - 1024    0    0.000    0.000 4000.00
  66.150.161.141  .INIT.         16 u    - 1024    0    0.000    0.000 4000.00
  66.150.161.133  .INIT.         16 u    - 1024    0    0.000    0.000 4000.00
 -128.9.176.30    .GPS.           1 u   69 1024  333   41.681   14.988   3.867

It is unclear if either of those DLink machines are obeying the access
restrictions of the servers that they are using.
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