Solved

How do I test externally for a Open Recursive DNS Resolver?

Posted on 2014-02-04
4
1,372 Views
Last Modified: 2014-02-14
From the internet, how do I test a DNS server for Open Recursive DNS Resolver?!?

Is there a tool I can use to test it?  Thank you.
0
Comment
Question by:NYGiantsFan
4 Comments
 
LVL 15

Expert Comment

by:unknown_routine
ID: 39832983
0
 
LVL 7

Expert Comment

by:Sivaraj E
ID: 39833154
Dear User

Please try this.

http://openresolverproject.org/

Regards, Shiva
0
 
LVL 26

Accepted Solution

by:
skullnobrains earned 500 total points
ID: 39835341
From the internet, how do I test a DNS server for Open Recursive DNS Resolver?!?

from your home computer type this in the command line

"nslookup www.experts-exchange.com"

and then

"nslookup www.experts-exchange.com server.to.check"

if you get the same answer, (assuming you are not hosting the experts-exchange domain), then your dns resolver is open

normal behavior should be something like this (i tried querying AOL's name servers)

nslookup experts-exchange.com dns-06.ns.aol.com
Server:		dns-06.ns.aol.com
Address:	207.200.73.80#53

** server can't find experts-exchange.com: REFUSED

Open in new window


if you are running a non ms machine, and nslookup is not available, you can use host or dig. with dig, you need to prefix the server to query with '@'

i guess you have enough material concerning external check tools with the above
0
 

Author Closing Comment

by:NYGiantsFan
ID: 39859727
TY!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
I had an issue with InstallShield not being able to use Computer Browser service on Windows Server 2012. Here is the solution I found.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

25 Experts available now in Live!

Get 1:1 Help Now