3 Replies Latest reply on Mar 2, 2015 10:39 AM by shawn_b

    Public DNS Lookup not working properly

    shawn_b

      Greetings all,

       

      I am doing some traffic monitoring using my beloved NTA module

       

      I have noticed that some public IP addresses in conversations do not resolve properly.

       

      Here is an example:

       

      Click on a Node > Network tab > Interface name

       

      View Top 10 Conversations for that Interface

      Top10convos.jpg

      Observe that some public IP addresses that are resolved to their domain name, e.g. server.theconservativeincomeinvestor.com (198.1.64.17)

       

      but there are several that do not e.g. 64.27.100.131

       

      Click on the conversation between 64.27.100.131 and my private endpoint (192.168.52.65)

      Total bytes.jpg

      Click on the Public IP address - it lists the country

      Public_IP.jpg

      Click lookup

      DNS_lookup.JPG

      DNS_lookup_failed.JPG

       

      Is there a setting that has to be configured for external DNS lookups?