[ntp:questions] pool.ntp.org DNS errors & warnings

Danny Mayer 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
do here.

Danny
Guy Macon wrote:
> 
> 
> pool.ntp.org DNS errors & warnings:
> 
> DNS Servers for pool.ntp.org:
> a.ntpns.org. [216.52.237.236]
> b.ntpns.org. [67.19.103.171]
> c.ntpns.org. [193.138.215.60]
> d.ntpns.org. [217.114.97.98]
> e.ntpns.org. [70.63.21.246]
> 
> Errors/warnings:
> 
> ERROR #1:
> The other DNS Servers are closed, but c.ntpns.org. [193.138.215.60]
> 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. [70.63.21.246] says that serial # 
> 1181758808 is the latest version.
> 
> 
> WARNING #1:
> The other DNS servers accept TCP connections, but b.ntpns.org 
> [67.19.103.171] 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)
> 
> Source:
> http://www.dnsstuff.com/tools/dnsreport.ch?%26domain%3Dpool.ntp.org
> 
> 




More information about the questions mailing list