<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Dear Chris,</DIV>
<DIV> </DIV>
<DIV>Actually this query is being sent by my DHCP server running in windows operating system. </DIV>
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<DIV>I have configured forwarders in DHCP towards my gateway DNS servers(running in Redhat BIND).</DIV>
<DIV> </DIV>
<DIV><BR><BR>--- On <B>Tue, 26/4/11, Chris Buxton <I><chris.p.buxton@gmail.com></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From: Chris Buxton <chris.p.buxton@gmail.com><BR>Subject: Re: continous DNS query to ROOT DNS server<BR>To: "babu dheen" <babudheen@yahoo.co.in>, bind-users@lists.isc.org<BR>Date: Tuesday, 26 April, 2011, 9:17 PM<BR><BR>
<DIV class=plainMail>Create RFC 1918 reverse zones for whatever parts of this address space<BR>you're using.<BR><BR>Newer versions of BIND will do this automatically for you -- the zones<BR>are created without content. What version of BIND are you using?<BR><BR>Chris Buxton<BR>BlueCat Networks<BR><BR><BR>On 4/26/11, babu dheen <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=babudheen@yahoo.co.in" ymailto="mailto:babudheen@yahoo.co.in">babudheen@yahoo.co.in</A>> wrote:<BR>> Dear Chris,<BR>><BR>> Thanks for your quick response. But my concern is; why this query is<BR>> actually started going to AS112 servers.<BR>><BR>> Is it because my DHCP servers do not maintain PTR record zone for all<BR>> internal IP address?<BR>><BR>> I need to have a solution to stop this query at host level instead of adding<BR>> entry in DNS server<BR>><BR>><BR>> Regards<BR>> papdheen M<BR>><BR>> --- On Tue, 26/4/11,
Chris Buxton <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=chris.p.buxton@gmail.com" ymailto="mailto:chris.p.buxton@gmail.com">chris.p.buxton@gmail.com</A>> wrote:<BR>><BR>><BR>> From: Chris Buxton <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=chris.p.buxton@gmail.com" ymailto="mailto:chris.p.buxton@gmail.com">chris.p.buxton@gmail.com</A>><BR>> Subject: Re: continous DNS query to ROOT DNS server<BR>> To: "babu dheen" <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=babudheen@yahoo.co.in" ymailto="mailto:babudheen@yahoo.co.in">babudheen@yahoo.co.in</A>>, <A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=bind-users@lists.isc.org" ymailto="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</A>, "Kevin<BR>> Darcy" <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=kcd@chrysler.com" ymailto="mailto:kcd@chrysler.com">kcd@chrysler.com</A>><BR>> Date: Tuesday, 26 April,
2011, 5:52 PM<BR>><BR>><BR>> They're not root servers.<BR>><BR>> Add this to your named.conf, alongside your 'forwarders' statement:<BR>><BR>> forward only;<BR>><BR>> Chris Buxton<BR>> BlueCat Networks<BR>><BR>><BR>> On 4/26/11, babu dheen <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=babudheen@yahoo.co.in" ymailto="mailto:babudheen@yahoo.co.in">babudheen@yahoo.co.in</A>> wrote:<BR>>> Hi,<BR>>><BR>>> I understand that my system contacts AS112 server but not sure why my<BR>>> system<BR>>> is contacting AS112 ROOT servers<BR>>><BR>>> Can you tell me what i need to do at server level to stop this. I read the<BR>>> RFC but no where it clearly mentioned why this is happening.<BR>>><BR>>> I have already configured forwarders in my system to send query to my<BR>>> gateway DNS server(running in BIND). then why my system is not
using<BR>>> gateway<BR>>> DNS either for reverse DNS query mapping?<BR>>><BR>>> Regards<BR>>> babu<BR>>><BR>>> --- On Tue, 26/4/11, Kevin Darcy <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=kcd@chrysler.com" ymailto="mailto:kcd@chrysler.com">kcd@chrysler.com</A>> wrote:<BR>>><BR>>><BR>>> From: Kevin Darcy <<A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=kcd@chrysler.com" ymailto="mailto:kcd@chrysler.com">kcd@chrysler.com</A>><BR>>> Subject: Re: continous DNS query to ROOT DNS server<BR>>> To: <A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=bind-users@lists.isc.org" ymailto="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</A><BR>>> Date: Tuesday, 26 April, 2011, 12:32 AM<BR>>><BR>>><BR>>> On 4/25/2011 2:33 PM, babu dheen wrote:<BR>>><BR>>><BR>>><BR>>><BR>>><BR>>>
Dears,<BR>>><BR>>> I have DHCP server running in Windows Operating System(Windows 2003), i<BR>>> have configured forwarder towards gateway DNS server(running in redhat).<BR>>><BR>>> When i check the firewall hits for DHCP server i can see, my DHCP server<BR>>> is<BR>>> sending too many DNS query towards ROOT DNS servers(192.175.48.1,<BR>>> 192.175.48.6, 192.175.48.42 and etc)<BR>>><BR>>> Please guide us to stop this query at server level.<BR>>><BR>>> Regards<BR>>> BabuThis is not a DHCP list.<BR>>><BR>>> This is not a Microsoft list.<BR>>><BR>>> Those aren't root nameserver addresses, they are AS112 addresses, see<BR>>> <A href="http://public.as112.net/node/8" target=_blank>http://public.as112.net/node/8</A><BR>>><BR>>> Apparently you didn't define your own RFC 1918
zones.<BR>>><BR>>><BR>>><BR>>> - Kevin<BR>>><BR>>><BR>>> -----Inline Attachment Follows-----<BR>>><BR>>><BR>>> _______________________________________________<BR>>> bind-users mailing list<BR>>> <A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=bind-users@lists.isc.org" ymailto="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</A><BR>>> <A href="https://lists.isc.org/mailman/listinfo/bind-users" target=_blank>https://lists.isc.org/mailman/listinfo/bind-users</A><BR>><BR>> --<BR>> Sent from my mobile device<BR>><BR><BR>-- <BR>Sent from my mobile device<BR></DIV></BLOCKQUOTE></td></tr></table>