How to Hide BIND version

Informations:

BIND (Berkeley Internet Name Domain) is the most commonly used DNS server on the Internet, especially on Unix-like systems.
 

Login as root to your sever.

Edit named.conf configuration:
# nano /etc/named.conf

If you find a options function add this line to it:
version "some version";

If that function does not exist, just add it:
options {version "some version";};

Save and Exit

Restart your BIND service to take the change.
# /etc/init.d/named restart