Kind of Security: Bind9 should not tell its version into public

install/tpl/named.conf.options.master

@@ -22,6 +22,8 @@ options {
 	dnssec-validation yes;
 	dnssec-lookaside auto;
 
+	version "DNS managed by ISPConfig";
+	
 	auth-nxdomain no;    # conform to RFC1035
 	listen-on-v6 { any; };
 };