ntpd config tech note redux

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1

I'll add my .02 currency units: if you can, make one of your ntp peers
XX.pool.ntp.org, where XX is your country code. Obviously, not all
values of XX work -- among the surprising failures are il.pool.ntp.org,
jp.pool.ntp.org, and kr.pool.ntp.org -- but it's worth looking for your
country or a neighboring one. This will give you a selection among
many different choices, if you aren't concerned with picking a specific
one (say, for security reasons).

    --Steve Bellovin, http://www.research.att.com/~smb

2

Steven M. Bellovin wrote:

I'll add my .02 currency units: if you can, make one of your ntp peers
XX.pool.ntp.org, where XX is your country code. Obviously, not all values of XX work -- among the surprising failures are il.pool.ntp.org,
jp.pool.ntp.org, and kr.pool.ntp.org -- but it's worth looking for your
country or a neighboring one. This will give you a selection among many different choices, if you aren't concerned with picking a specific one (say, for security reasons).

I seem to get always the same answer, even from the authorative servers of the zone;

;; ANSWER SECTION:
ntp.pool.org. 2H IN CNAME sd3.mailbank.com.
sd3.mailbank.com. 30M IN A 64.15.175.6

Pete

3

Petri Helenius wrote:

;; ANSWER SECTION:
ntp.pool.org. 2H IN CNAME sd3.mailbank.com.
sd3.mailbank.com. 30M IN A 64.15.175.6

;; ANSWER SECTION:
pool.ntp.org. 1h30m IN A 64.44.160.38
pool.ntp.org. 1h30m IN A 65.39.134.11
pool.ntp.org. 1h30m IN A 80.85.129.25
pool.ntp.org. 1h30m IN A 80.254.168.209
pool.ntp.org. 1h30m IN A 81.174.128.183
pool.ntp.org. 1h30m IN A 130.60.7.43
pool.ntp.org. 1h30m IN A 130.60.7.44
pool.ntp.org. 1h30m IN A 193.140.151.9
pool.ntp.org. 1h30m IN A 202.49.159.9
pool.ntp.org. 1h30m IN A 209.162.205.202
pool.ntp.org. 1h30m IN A 209.204.172.153
pool.ntp.org. 1h30m IN A 212.13.201.101
pool.ntp.org. 1h30m IN A 217.125.14.244
pool.ntp.org. 1h30m IN A 217.127.32.90
pool.ntp.org. 1h30m IN A 217.127.249.18

4

Suresh Ramasubramanian wrote:

;; ANSWER SECTION:
pool.ntp.org. 1h30m IN A 64.44.160.38
pool.ntp.org. 1h30m IN A 65.39.134.11
pool.ntp.org. 1h30m IN A 80.85.129.25
pool.ntp.org. 1h30m IN A 80.254.168.209
pool.ntp.org. 1h30m IN A 81.174.128.183
pool.ntp.org. 1h30m IN A 130.60.7.43

Whoops, too early, my bad.

Pete