Eric Nelson wrote:
Uh oh. I didn't know it was anything but some government service. Do you know any ntp servers which are less restrictive? I don't want to have bad dreams about stratum 1 servers. They sound a little scary.This page: http://www.eecis.udel.edu/~mills/ntp/clock2.html contains a list of stratum 2 servers, along with their policies. Usually you just need to email the server admin and tell them that you're using their server.
Matt
On Sunday 15 December 2002 17:57, Rick Moen wrote:Quoting Eric Nelson ([EMAIL PROTECTED]):The hostname is a CNAME for usno.pa-x.dec.com, operated by CompaqHere is what I use in crontab: 59 * * * * /usr/sbin/ntpdate ntp-dec.usno.navy.mil >> /dev/null
in Palo Alto for the U.S. Naval Observatory. It's a stratum 1
server. Posted access policy is "Access Policy: open access for
stratum 2 servers, Compaq, others by arrangement."
(http://tycho.usno.navy.mil/ntp.html)
USNO states at the top of the listing at the top of the page: "All
of the following stratum 1 NTP servers are open to stratum 2
servers within the same time zone and to others by arrangement."
http://www.eecis.udel.edu/~mills/ntp/servers.html states: "Please
respect the access policy as stated by the responsible person. It
is very important that potential clients avoid use of servers not
listed as open access, unless approved first by the responsible
person. This especially includes indiscriminate use of servers not
listed in the list, since this can be disruptive. The responsible
person should always be notified upon establishment of regular
operations with servers listed as open access. Servers listed as
closed access should NOT be used without prior permission, since
this may disrupt ongoing activities in which these servers are
involved."
That page clarifies about what is meant by a stratum 2 server: "The secondary server provides synchronization to a sizable
population of other servers and clients on the order of 100 or
more." (There's more.)
It is not unknown for members of the general public who sync to
statum 1 servers without prior arrangement to find their entire IP
blocks blocked by the statum 1 server operator.
On the bright side, doing the sort of periodic ntpdate you discuss
is less likely to risk the wrath of a statum 1 server than would
running ntpd against it -- as I've seen people urge on other
mailing lists that I guess should go nameless.
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