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Fatih ASLAN
Fatih ASLAN

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Ubuntu Üzerine DNS(Named - Bind) Servisinin Kurulum ve Yapılandırması - Public or Private DNS

#dns #bind #named #ubuntu 
sudo apt install -y bind9 bind9utils bind9-doc dnsutils
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Yapılandırma dosyaları /etc/bind/ altındadır.

Oluşturacağımız forward zone ve reverse zone bu dosya içerisinde belirtiyoruz /etc/bind/named.conf.local

cd /etc/bind
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sudo vi named.conf.options
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Aşağıdaki yapılandırma satırlarını ortamınıza göre şekillendirebilirsiniz.


        allow-query { any; };
        listen-on port 53 { any; };
        allow-transfer { none; };
        recursion yes;
        querylog yes;
        allow-recursion { any; };
        version "Ubuntu DNS Server for fatlan.com";
        dnssec-validation auto;
        listen-on-v6 { any; };
        forwarders {
            8.8.8.8;
        };
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sudo vi named.conf.local
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zone "fatlan.com" IN {

     type master;

     file "/etc/bind/fatlan.com";

     allow-update { none; };
};


zone "0.0.127.in-addr.arpa" IN {

     type master;

     file "/etc/bind/reverse.fatlan.com";

     allow-update { none; };
};
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Şimdi fatlan.com ve reverse.fatlan.com dosyalarını oluşturalım.

sudo cp db.local  fatlan.com

sudo cp db.127  reverse.fatlan.com
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sudo vi fatlan.com
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127.0.0.1 no'lu ip'ler yerine sizin için ilgili ip'yi girmeniz önerilir.

;
; BIND data file for local loopback interface
;
$TTL    604800
@       IN      SOA     ns.fatlan.com. root.ns.fatlan.com. (
                              2         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      ns.fatlan.com.
@       IN      A       127.0.0.1
@       IN      AAAA    ::1
ns      IN      A       127.0.0.1
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sudo vi reverse.fatlan.com
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127.0.0.1 no'lu ip'ler yerine sizin için ilgili ip'yi girmeniz önerilir.

;
; BIND reverse data file for local loopback interface
;
$TTL    604800
@       IN      SOA     ns.fatlan.com. root.ns.fatlan.com. (
                              1         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      ns.fatlan.com.
NS      IN      A       127.0.0.1
1       IN      PTR     ns.fatlan.com.
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sudo named-checkconf
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sudo named-checkzone fatlan.com /etc/bind/fatlan.com
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sudo named-checkzone reverse.fatlan.com /etc/bind/reverse.fatlan.com
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image

sudo systemctl start bind9.service
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Şimdi dns server'ımı /etc/resolv.cond dan bu dns gösterip aşağıdaki testleri yapıyorum.

image

ilgili portları tespit için aşağıdaki komutları kullanabilirsiniz.

sudo ss -plnta | egrep -i named

sudo netstat -plnta | egrep -i named
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NoT: Her kayıt eklendiğinde mutlaka Serial kısmı arttırılmalıdır.

fatlan.com için örnek kayıtlar...

fatlan.com.   IN     MX   10   mail.fatlan.com.

www     IN       A      127.0.0.1
mail    IN       A      127.0.0.1

ftp     IN      CNAME   www.fatlan.com.
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reverse.fatlan.com için örnek kayıtlar...

3     IN      PTR    www.fatlan.com.
4     IN      PTR    mail.fatlan.com.
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ref: https://ubuntu.com/server/docs/service-domain-name-service-dns

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