install dns server
1. merubah repositori via ssh #pico /etc/apt/sources.list
deb http://deb.debian.org/debian/ bullseye main

deb-src http://deb.debian.org/debian/ bullseye main

deb http://security.debian.org/debian-security bullseye-security main contrib

deb-src http://security.debian.org/debian-security bullseye-security main contrib

deb http://deb.debian.org/debian/ bullseye-updates main contrib

deb-src http://deb.debian.org/debian/ bullseye-updates main contrib
2. apt update
3. apt install bind9 -y
4. cd /etc/bind
5. cp db.127 db.172
6.  cp db.local db.domain
7. pico db.172 
	rubah localhost menjadi domain yg akan kita pakai
	1.0.0.0 menjadi ip akted thakir
8. pico db.domain
	rubah localhost menjadi domain yg akan kita pakai
	ip add di sesuaikan
9. pico named.conf.options
	forwarders {
         8.8.8.8;
         };

	dnssec-validation no;

10. pico named.conf
	zone "zai.smkpgriwlingi.sch.id"{
        type master;
        file "/etc/bind/db.domain";
};

zone "203.168.192.in-addr.arpa"{
        type master;
	file "/etc/bind/db.172";
};
11. systemctl restart named
12. systemctl status named
13. sesuaikan dns di komputer 
14. cek di cmd nslookup harus keluar domain kita