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edits
Changes
→Investigation 1: Primary Name Server
* Each A record (address record) should contain the FQDN (or host name) of each VM and its corresponding IP address.
* Each PTR record should contain the FQDN and the corresponding IP address in reverse dotted-decimal notation format (e.g. use 53.99.168.192.in-addr.arpa. for IP address 192.168.99.53)
* The file for your forward zone should be my-zone.txt, and the file for the reverse zoneshould zone should be rev-zone.txt.
* Make sure you configure the following major options:
**listen-on: port 53 and all network interface
<li>Modify your other lab VMs so that they use your VM1 as the first DNS server to contact, and your host as the second (in case your VM1 fails).</li>
<li>Run the appropriate "tcpdump" command on your DNS server to capture all DNS query and response packets to a file and name the tcpdump packet file as named '''dns-packet'''in the /root directory. While tcpdump is running on your DNS server, repeat '''all''' the DNS queries (SOA, NS, A, PTR) on your host.
*Read the tcpdump file with the "-r" flag to verify that the targeted packets were captured to the file. It should contain queries and answers for each of the records in your domain.
</li>
