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* Your ISP (whomever you pay for your internet connection, i.e. the company that assigned a public IP to your server) is responsible for revers DNS lookups for your IP.
= INVESTIGATION 1: CONFIGURING THE DNS SERVER =
We will now be installing, configuring and running a '''DNS server on our vm1'''.
You can just disable the firewall but that is a poor workaround. You're expected to be able to handle configuration like this in this course.
= INVESTIGATION 2: CONFIGURING THE DNS CLIENT =
Now that we have setup a DNS server on your virtual machine (vm1), we will now switch configure all our VMs to use that as the host machine, and define the name default DNS server that is running on vm1 in order to resolve the seneca-id domain name to the appropriate IP address.
You should know how to do that, if you forgot - go back to [[OPS335_Lab_1 | Lab 1]] to remind yourself.
'''Perform the following steps on your Centos host:'''