Minimal Requirement Bin9.9x :

pada file named.conf tambahkan ini :

zone "safesearch" IN {
type master;
file "/usr/local/etc/namedb/safesearch/safe.zone"; #di sesuaikan dengan setting / direktori named
allow-query {nice;};
allow-update {none;};

pada optios tambahkan ini fungsi RPZ :

options {
;----snip---------
   response-policy {
                zone "safesearch";
   } max-policy-ttl 3600;
;---- end snip------
};

Contoh isi dari file safe.zone sepeti ini :

---------------
$TTL 60
@ IN SOA localhost. root.localhost. (
    2014110500;
    10800;
    3600;
    604800;
    10800 )
IN NS localhost.
;
; Google forced Safe Search zone and data
google.com CNAME forcesafesearch.google.com.
www.google.com CNAME forcesafesearch.google.com.
google.co.id CNAME forcesafesearch.google.com.
www.google.co.id CNAME forcesafesearch.google.com.
-----------------

Referensi : https://support.google.com/websearch/answer/186669?hl=en

https://www.google.com/supported_domains