Reverse entries file
Once you’ve completed the configuration on the Forward entries file you can move to the next step, that is the creation of the Reverse entries configuration file,
Both the Forward and the Reverse entries files are located at the following path:
Here once again feel free to copy and use the following text adapting it to your LAB
$TTL 86400 @ IN SOA centos7.tdtlab.com. root.tdtlab.com. ( 1 ;Serial 1H ;Refresh 1H ;Retry 1W ;Expire 3H ;Minimum TTL ) IN NS centos7.tdtlab.com. 76 IN PTR centos7.tdtlab.com. 169 IN PTR cucm.tdtlab.com. 196 IN PTR uccx.tdtlab.com.
Using “vi” to create the Reverse entries file
You can use the text editor of your preference or even better use the GUI provided by WinSCP to make things as easy as possible.