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→PART 2: REVERSE DNS
Set this up for all your hosts and test it with the host command.
= PART 3: DNS IMPORTANCE FOR SECURITY =
There are many types of attacks on DNS or using DNS. We won't have time to try any of them, but we can do something simple to illustrate the significance of reliable DNS, and the potential of exploiting it.
* Set up your lin2 Bind server to be an authoritative server for google.com
* Set up a record for www.google.com to point to your web server on lin1.
* Confirm that c7host is still using lin2 as the DNS server.
* Clear the history from Firefox in c7host.
* Go to [http://www.google.com http://www.google.com] in your web browser on c7host.