Another one of my bulk DNS scripts.

This was a weird request however there were a number of requirements:

• Allow BIND servers running on Linux/Unix to take zone transfers of all production zones (forward and reverse), this should be limited to specific servers.
• BIND servers should only be allowed to request one transfers from specific servers
• Only authorised BIND servers should be permitted
• BIND servers SHOULD be listed in a name server query for a particular zone (that is, BIND servers should have an NS record)

The script is pretty simple: