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RV042 responding to DNS requests from the internet

Hello;

My RV042 is responding to DNS requests from the internet. Is this supposed to happen? If not, how do I stop it from doing so?

Thank you,

David Kellett                  

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4 REPLIES
Green

RV042 responding to DNS requests from the internet

Hi David, can you be more specific?

Here's is a nifty tool you can check out

http://netalyzr.icsi.berkeley.edu/

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/
New Member

RV042 responding to DNS requests from the internet

Originally I was having trouble with a DNS attack slowing down my system. But when I had my ISP check things out after I stopped the attack I had them check to see if everything looked alright from their end and they informed me that my router was answering DNS requests from the internet, not just from my intranet. I need to know how to stop it from doing that. I do not want it answering DNS requests from the internet.

Thanks,

Dave

Green

RV042 responding to DNS requests from the internet

Hi David, so what DNS query is being sent and how did you confirm it is the router that is responding to it?

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/
New Member

RV042 responding to DNS requests from the internet

Tom;

Here is what my ISP sent to me:

Here is another DNS query I just sent to that box:

; <<>> DiG 9.7.3 <<>> any google.com @72.21.67.204

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1174

;; flags: qr rd ra; QUERY: 1, ANSWER: 24, AUTHORITY: 0, ADDITIONAL: 5

;; ANSWER SECTION:

google.com.             221     IN      A       173.194.33.65

google.com.             221     IN      A       173.194.33.66

google.com.             221     IN      A       173.194.33.67

google.com.             221     IN      A       173.194.33.68

google.com.             221     IN      A       173.194.33.69

google.com.             221     IN      A       173.194.33.70

google.com.             221     IN      A       173.194.33.71

google.com.             221     IN      A       173.194.33.72

google.com.             221     IN      A       173.194.33.73

google.com.             221     IN      A       173.194.33.78

google.com.             221     IN      A       173.194.33.64

google.com.             162060  IN      NS      ns1.google.com.

google.com.             162060  IN      NS      ns4.google.com.

google.com.             162060  IN      NS      ns3.google.com.

google.com.             162060  IN      NS      ns2.google.com.

google.com.             86400   IN      SOA     ns1.google.com. dns-admin.google.com. 2013121300 7200 1800 1209600 300

google.com.             600     IN      MX      50 alt4.aspmx.l.google.com.

google.com.             600     IN      MX      10 aspmx.l.google.com.

google.com.             600     IN      MX      20 alt1.aspmx.l.google.com.

google.com.             600     IN      MX      30 alt2.aspmx.l.google.com.

google.com.             600     IN      MX      40 alt3.aspmx.l.google.com.

google.com.             3600    IN      TXT     "v=spf1 include:_spf.google.com ip4:216.73.93.70/31 ip4:216.73.93.72/31 ~all"

google.com.             300     IN      AAAA    2607:f8b0:400a:802::1007

google.com.             86400   IN      TYPE257 \# 19 0005697373756573796D616E7465632E636F6D

;; ADDITIONAL SECTION:

ns1.google.com.         1983    IN      A       216.239.32.10

ns4.google.com.         1983    IN      A       216.239.38.10

ns3.google.com.         1983    IN      A       216.239.36.10

ns2.google.com.         1983    IN      A       216.239.34.10

;; Query time: 193 msec

;; SERVER: 72.21.67.204#53(72.21.67.204)

;; WHEN: Sun Jan 12 10:42:09 2014

;; MSG SIZE  rcvd: 652

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