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debian squeeze ile güvenli bind kurulumu

05.06.2011 16:50:06

`Bind` dns sunucu kurulumu CHROOT kullanarak güvenliği en üst seviyede yapacağız.

BIND9 Kurulumu
aptitude install bind9 dnsutils


Konfigurasyon ayarlarına başlayalım.
vim /etc/bind/named.conf.options 
	options {
		directory "/var/cache/bind";

		auth-nxdomain no;    # conform to RFC1035
		listen-on-v6 { any; };
	};


Yetkili DNS Ayarları
vim /etc/bind/named.conf.local
	zone "pythontr.com" {
		type master;
		file "/etc/bind/zones/pythontr.com.db";
	};

	zone "31.89.69.in-addr.arpa"{
		type master;
		file "/etc/bind/zones/rev.31.89.69.in-addr.arpa";
	};



Alan Adı Ekleme
mkdir /etc/bind/zones
vim /etc/bind/zones/pythontr.com.db
;
; SOA
;
$TTL    1h
@               IN      SOA     ns1.pythontr.com. hostmaster.pythontr.com. (
                        0000000001      ; Serial number
                        1h              ; Slave refresh
                        15m             ; Slave retry
                        2w              ; Slave expire
                        1h              ; Negative Cache TTL
                        )
;
; Name Server Kayıtları
;
@               IN      NS              ns1.pythontr.com.
@               IN      NS              ns2.pythontr.com.
;
; Mail Kayıtları
;
@               IN      MX      10      mail.pythontr.com.
;
; A Kayıtları
;
@               IN      A               69.89.31.166
www             IN      A               69.89.31.166
ns1             IN      A               69.89.31.166
ns2             IN      A               69.89.31.166
mail            IN      A               69.89.31.166
destek          IN      A               69.89.31.166


TERS DNS
vim /etc/bind/zones/rev.31.89.69.in-addr.arpa

$TTL    1h
@ IN SOA ns1.pythontr.com. hostmaster.pythontr.com. (
                        0000000001;
                        1h;
                        15m;
                        2w;
                        1h
)

                    IN    NS     ns1.pythontr.com.
1                   IN    PTR    pythontr.com.
2                   IN    PTR    pythontr.com.
3                   IN    PTR    pythontr.com.
4                   IN    PTR    pythontr.com.


CHROOT AYARLARI
vim /etc/default/bind9
	# run resolvconf?
	RESOLVCONF=yes
	# startup options for the server
	OPTIONS="-u bind -t /var/lib/named"

mkdir -p /var/lib/named/etc
mkdir -p /var/lib/named/dev
mkdir -p /var/lib/named/var/cache/bind
mkdir -p /var/lib/named/var/run/bind/run

mv /etc/bind /var/lib/named/etc

ln -s /var/lib/named/etc/bind /etc/bind

mknod /var/lib/named/dev/null c 1 3
mknod /var/lib/named/dev/random c 1 8

vim /etc/init.d/sysklogd
	SYSLOGD="-a /var/lib/named/dev/log"

/etc/init.d/sysklogd restart
/etc/init.d/bind9 restart

vim /etc/resolv.conf
	nameserver 69.89.31.166


DNS Ayarlarını Kontrolü
dig @69.89.31.166 pythontr.com

; <<>> DiG 9.5.0-P2 <<>> @172.16.3.1 pythontr.com
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42726
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;pythontr.com. IN A

;; ANSWER SECTION:
pythontr.com. 3600 IN A 69.89.31.166

;; AUTHORITY SECTION:
pythontr.com. 3600 IN NS ns1.pythontr.com.
pythontr.com. 3600 IN NS ns2.pythontr.com.

;; ADDITIONAL SECTION:
ns1.pythontr.com. 3600 IN A 69.89.31.166
ns2.pythontr.com. 3600 IN A 69.89.31.166

;; Query time: 0 msec
;; SERVER: 172.16.3.1#53(172.16.3.1)
;; WHEN: Sun Mar 8 17:53:47 2009
;; MSG SIZE rcvd: 116


host 69.89.31.166
166.31.89.69.in-addr.arpa domain name pointer pythontr.com.


Eğer mail hizmetinizi Gmail’den alıyorsanız alanadı dosyamızda aşağıdaki yeri;

@               IN      MX      10      mail.pythontr.com.


Siliyorsunuz. Gmail’e ait bilgileri onun yerine ekliyorsunuz.
pythontr.com.		3600	IN	MX	3 alt2.aspmx.l.google.com.
pythontr.com.		3600	IN	MX	5 aspmx2.googlemail.com.
pythontr.com.		3600	IN	MX	5 aspmx3.googlemail.com.
pythontr.com.		3600	IN	MX	1 aspmx.l.google.com.
pythontr.com.		3600	IN	MX	3 alt1.aspmx.l.google.com.
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