[ntp:questions] pool.ntp.org DNS errors & warnings
mayer at ntp.isc.org
Thu Jun 14 04:19:16 UTC 2007
I suggest you take this to the pool mailing list. There's nothing we can
Guy Macon wrote:
> pool.ntp.org DNS errors & warnings:
> DNS Servers for pool.ntp.org:
> a.ntpns.org. [184.108.40.206]
> b.ntpns.org. [220.127.116.11]
> c.ntpns.org. [18.104.22.168]
> d.ntpns.org. [22.214.171.124]
> e.ntpns.org. [126.96.36.199]
> ERROR #1:
> The other DNS Servers are closed, but c.ntpns.org. [188.8.131.52]
> is an open DNS server, and responds to queries for domains it is not
> authoritative for. This can cause an excessive load on this DNS server.
> Also, this DNS server can be used as part of an attack by forging
> IP address.
> ERROR #2:
> The other DNS Servers say that serial # 1181760004 is the latest
> version, but e.ntpns.org. [184.108.40.206] says that serial #
> 1181758808 is the latest version.
> WARNING #1:
> The other DNS servers accept TCP connections, but b.ntpns.org
> [220.127.116.11] does not.
> WARNING: #2:
> The SOA (Start of Authority) record states the master (primary)
> name server is ns1.us.bitnames.com, but that server is not listed
> at the parent servers as one of the NS records.
> WARNING #3: SOA MINIMUM TTL is 240 seconds. RFC2308 suggests
> a value of 1-3 hours (Is this a bogus error? Is there a
> reason why this should be shorter than usual because this is
> for an an NTP pool? -Guy)
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