RE: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-11 Thread Matthew Huff
: matthewbhuff  | Fax:   914-460-4139 > -Original Message- > From: David Forrest [mailto:d...@maplepark.com] > Sent: Wednesday, February 11, 2009 10:11 AM > To: Matthew Huff > Cc: 'bind-users@lists.isc.org' > Subject: RE: loads of Query denied... is it an at

RE: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-11 Thread David Forrest
On Wed, 11 Feb 2009, Matthew Huff wrote: I've been aware of this problem since it first came up on this and nanog's list, but I'm having some configuration issues trying to make the upward referrel be refused. I'm running bind-9.6.0P1, but I'm still seeing the NS queries being answered in the lo

RE: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-11 Thread Matthew Huff
I've been aware of this problem since it first came up on this and nanog's list, but I'm having some configuration issues trying to make the upward referrel be refused. I'm running bind-9.6.0P1, but I'm still seeing the NS queries being answered in the log: 11-Feb-2009 09:34:25.489 queries: client

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-11 Thread David Ford
An intelligently designed firewall rule that drops the incoming requests isn't doing exactly what the attacker wants. It's the opposite. The main effect of forged lookups is a response flood. And so it is also intended to flood the victim with overwhelming amounts of DNS responses. It, like any

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-11 Thread Thomas Manson
Well... > > I'll temporray block the ip on my firewall > > Very bad idea, since it is forged. You do exactly what the attacker > wanted you to do. > The proper thing to do is: > https://www.dns-oarc.net/oarc/articles/upward-referrals-considered-harmful > this is kind of response I expect : an an

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-11 Thread Stephane Bortzmeyer
On Wed, Feb 11, 2009 at 01:21:35AM +0100, Thomas Manson wrote a message of 88 lines which said: > I believed I was on bind mailing list, a mailing list is where you > usually get some help... isn't it ? You're right, it's a shame. Ask immediately for a refund, both for your registration to th

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-11 Thread Stephane Bortzmeyer
On Wed, Feb 11, 2009 at 01:35:31AM +0100, Thomas Manson wrote a message of 80 lines which said: > I'll temporray block the ip on my firewall Very bad idea, since it is forged. You do exactly what the attacker wanted you to do. The proper thing to do is: https://www.dns-oarc.net/oarc/article

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-10 Thread Thomas Manson
someone answers me, you could just have say search "reflector DoS attack" in the archive list, this would have narrow down a lot my research. I'll temporray block the ip on my firewall On Wed, Feb 11, 2009 at 01:21, Mark Andrews wrote: > > In message , > Thoma > s Manson writes: > > > >

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-10 Thread Mark Andrews
In message , Thoma s Manson writes: > --00163646c41c20dc350462999600 > Content-Type: text/plain; charset=UTF-8 > Content-Transfer-Encoding: 7bit > > That's some awesome answer... (did you get helped to elaborate it?) > > equivalent : google is your friend, search the RFCs Feeding the er

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-10 Thread Mark Andrews
In message , Thoma s Manson writes: > The subject matter has been discussed in lots of detail over the last month. Go read the archives of the mailing list. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-10 Thread Thomas Manson
That's some awesome answer... (did you get helped to elaborate it?) equivalent : google is your friend, search the RFCs Then... read the list archives... I guess I can spend the next ten years if I read it from the beginning Could you give any clue of what to look for ? I believed I was on

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-10 Thread Thomas Manson
On Wed, Feb 11, 2009 at 00:51, Mark Andrews wrote: > >Please go read the list achives. > >Mark > -- > Mark Andrews, ISC > 1 Seymour St., Dundas Valley, NSW 2117, Australia > PHONE: +61 2 9871 4742 INTERNET: mark_andr...@isc.org > _

Re: loads of Query denied... is it an attack or a misconfiguration ?

2009-02-10 Thread Mark Andrews
Please go read the list achives. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: mark_andr...@isc.org ___ bind-users mailing list bind-users@lists.isc.org http