[nsp-sec] 4.2.2.2 DNS wierdness ??

Lawrence Baldwin baldwinl at mynetwatchman.com
Fri Oct 24 15:03:10 EDT 2014


For some reason impact was regional (Atlanta)..L3 threw pixie dust on it
and works great now.  What (non)customer service!

lb.
On 10/20/2014 12:28 PM, Lawrence Baldwin wrote:
> ----------- nsp-security Confidential --------
> 
> Anyone noticing issues with this much used open resolver?
> 
> 
> $ nslookup
>> server 4.2.2.2
> Default server: 4.2.2.2
> Address: 4.2.2.2#53
>> budget.com
> ;; connection timed out; trying next origin
> Server:		4.2.2.2
> Address:	4.2.2.2#53
> 
> ** server can't find budget.com: NXDOMAIN
> 
>> www.google.com
> Server:		4.2.2.2
> Address:	4.2.2.2#53
> 
> Non-authoritative answer:
> Name:	www.google.com
> Address: 74.125.229.177
> Name:	www.google.com
> Address: 74.125.229.179
> Name:	www.google.com
> Address: 74.125.229.180
> Name:	www.google.com
> Address: 74.125.229.176
> Name:	www.google.com
> Address: 74.125.229.178
> 
> 
>> booking.com
> Server:		4.2.2.2
> Address:	4.2.2.2#53
> 
> ** server can't find booking.com: NXDOMAIN
> 
> 
> Had some of our stuff using it to resolve and was causing a ton of
> problems since it seems to NOT want to resolve bunches of
> domains..things got real bad when it stopped resolving pool.ntp.org
> (though that seems to be working now).
> 
> 


-- 
Lawrence Baldwin
Chief Forensics Officer
myNetWatchman.com
Atlanta, GA
+1.678.624.0924



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