Topic 'Re: Is this legal DNS Query?' in forum 'Networking'

Topic 'Re: Is this legal DNS Query?' in forum 'Networking' - dslreports.com http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27681810 en Sun, 19 May 2013 01:21:43 EDT Sun, 19 May 2013 01:21:43 EDT Re: Is this legal DNS Query? http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27696015 --
dnoyeB
"Then said I, Wisdom [is] better than strength: nevertheless the poor man's wisdom [is] despised, and his words are not heard. " Ecclesiastes 9:16
]]> http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27696015 Mon, 05 Nov 2012 14:54:35 EDT Re: Is this legal DNS Query? http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27684442
I have resolved the issue down to my Zyxel USG. It seems to be confused by the lack of a checksum. I think its not opening a session, or prematurely closing it. The DNS reply appears on the WAN side, but the firewall tosses it out and sends the DNS server an ICMP saying it can't find the host...
--
dnoyeB

"Then said I, Wisdom [is] better than strength: nevertheless the poor
man's wisdom [is] despised, and his words are not heard. " Ecclesiastes
9:16
]]> http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27684442 Thu, 01 Nov 2012 17:05:14 EDT Re: Is this legal DNS Query? http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27684158
My guess... whatever 0.1 is doesn't like the "no checksum" udp packets. Technically, that would be a *bad* checksum, and the OS may drop it. All of my linux boxes will.]]> http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27684158 Thu, 01 Nov 2012 16:14:46 EDT Re: Is this legal DNS Query? http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27682963 http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27682963 Thu, 01 Nov 2012 12:04:12 EDT Re: Is this legal DNS Query? http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27682810 192.168.0.1 what the IP address of www.fitbit.com is? I guess my question at this point is does your
sniffer capture ever return a response from anyone for an IP address of www.fitbit.com at all or not?

I'm really rusty on my DNS so I'd have to do a bit of refresher reading into this.

Regards]]> http://www.dslreports.com/forum/Re-Is-this-legal-DNS-Query-27682810 Thu, 01 Nov 2012 11:17:18 EDT Is this legal DNS Query? http://www.dslreports.com/forum/Is-this-legal-DNS-Query-27681810

failed query

]]> http://www.dslreports.com/forum/Is-this-legal-DNS-Query-27681810 Thu, 01 Nov 2012 01:25:19 EDT