Mike has swept the perimeter for you Jaime, it is safe to enter.

 

From: Af [mailto:[email protected]] On Behalf Of Mike Hammett
Sent: Sunday, October 30, 2016 10:21 AM
To: [email protected]
Subject: Re: [AFMUG] google dns

 

I don't see any Mikrotik here...



-----
Mike Hammett
 <http://www.ics-il.com/> Intelligent Computing Solutions
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<https://twitter.com/ICSIL> 
 <http://www.midwest-ix.com/> Midwest Internet Exchange
 <https://www.facebook.com/mdwestix>  
<https://www.linkedin.com/company/midwest-internet-exchange>  
<https://twitter.com/mdwestix> 
 <http://www.thebrotherswisp.com/> The Brothers WISP
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  _____  

From: "Jaime Solorza" <[email protected] 
<mailto:[email protected]> >
To: "Animal Farm" <[email protected] <mailto:[email protected]> >
Sent: Saturday, October 29, 2016 10:30:38 AM
Subject: Re: [AFMUG] google dns

No Ken that's me as well... I skip all the Mikrotik posts.... Yawn

 

On Oct 29, 2016 9:22 AM, "Ken Hohhof" <[email protected] <mailto:[email protected]> 
> wrote:

Am I the only one that can’t follow what you are talking about?

 

From: Af [mailto:[email protected] <mailto:[email protected]> ] On Behalf 
Of David Milholen
Sent: Saturday, October 29, 2016 10:18 AM
To: [email protected] <mailto:[email protected]> 
Subject: Re: [AFMUG] google dns

 

Yes, And I monitor the list of ips it bans. These bans are from our dns server 
only.

If I turn off the rule asc with all DNS server bans then the command functions 
as normal. 

Somewhere in that list there is a misbehaving ip asc with the ability to 
resolve from google dns

 

 

On 10/28/2016 6:51 PM, Paul Stewart wrote:

Most IDS systems have logs that you could search through and find the look up … 
should give you a clue … is that what you’re asking?
 

On Oct 28, 2016, at 7:28 PM, David Milholen  <mailto:[email protected]> 
<[email protected]> wrote:
 
Ok, 
I have some happy IDS components  that seem to stopping google dns from 
completing a lookup to our website.
How can I find out what ips are being blocked from making the trip?
I am not sure a traceroute is going to do it.  I dont have an issue getting to 
google. 
 google-dns is having an issue finding our dns.  
 
This is what I get with the commands I run
 nslookup wletc.com <http://wletc.com>  8.8.8.8
Server:         8.8.8.8
Address:        8.8.8.8#53
 
** server can't find wletc.com <http://wletc.com> : SERVFAIL
 
When I disable the firewall rule that drops the bad IPs this is what I get.
 nslookup wletc.com <http://wletc.com>  8.8.8.8
Server:         8.8.8.8
Address:        8.8.8.8#53
 
Non-authoritative answer:
Name:   wletc.com <http://wletc.com> 
Address: 162.212.24.50
 
What ip addresses are causing the lookup to fail??
 
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