آموزش راه اندازی DNS سرور در لینوکس

yum install bind bind-utils -y

vi /etc/named.conf

//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//

options {
    listen-on port 53 { 127.0.0.1; 192.168.1.101;}; ### Master DNS IP ###
#    listen-on-v6 port 53 { ::1; };
    directory     "/var/named";
    dump-file     "/var/named/data/cache_dump.db";
    statistics-file "/var/named/data/named_stats.txt";
    memstatistics-file "/var/named/data/named_mem_stats.txt";
    allow-query     { localhost; 192.168.1.0/24;}; ### IP Range ###
    allow-transfer{ localhost; 192.168.1.102; };   ### Slave DNS IP ###

    /* 
     - If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.
     - If you are building a RECURSIVE (caching) DNS server, you need to enable 
       recursion. 
     - If your recursive DNS server has a public IP address, you MUST enable access 
       control to limit queries to your legitimate users. Failing to do so will
       cause your server to become part of large scale DNS amplification 
       attacks. Implementing BCP38 within your network would greatly
       reduce such attack surface 
    */
    recursion yes;

    dnssec-enable yes;
    dnssec-validation yes;
    dnssec-lookaside auto;

    /* Path to ISC DLV key */
    bindkeys-file "/etc/named.iscdlv.key";

    managed-keys-directory "/var/named/dynamic";

    pid-file "/run/named/named.pid";
    session-keyfile "/run/named/session.key";
};

logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
        };
};

zone "." IN {
    type hint;
    file "named.ca";
};

zone "unixmen.local" IN {
type master;
file "forward.unixmen";
allow-update { none; };
};
zone "1.168.192.in-addr.arpa" IN {
type master;
file "reverse.unixmen";
allow-update { none; };
};

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

vi /var/named/forward.unixmen

$TTL 86400
@   IN  SOA     masterdns.unixmen.local. root.unixmen.local. (
        2011071001  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)
@       IN  NS          masterdns.unixmen.local.
@       IN  NS          secondarydns.unixmen.local.
@       IN  A           192.168.1.101
@       IN  A           192.168.1.102
@       IN  A           192.168.1.103
masterdns       IN  A   192.168.1.101
secondarydns    IN  A   192.168.1.102
client          IN  A   192.168.1.103

vi /var/named/reverse.unixmen

$TTL 86400
@   IN  SOA     masterdns.unixmen.local. root.unixmen.local. (
        2011071001  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)
@       IN  NS          masterdns.unixmen.local.
@       IN  NS          secondarydns.unixmen.local.
@       IN  PTR         unixmen.local.
masterdns       IN  A   192.168.1.101
secondarydns    IN  A   192.168.1.102
client          IN  A   192.168.1.103
101     IN  PTR         masterdns.unixmen.local.
102     IN  PTR         secondarydns.unixmen.local.
103     IN  PTR         client.unixmen.local.

systemctl enable named
systemctl start named

firewall-cmd --permanent --add-port=53/tcp

firewall-cmd --permanent --add-port=53/udp

firewall-cmd --reload

chgrp named -R /var/named

chown -v root:named /etc/named.conf

restorecon -rv /var/named

restorecon /etc/named.conf

named-checkconf /etc/named.conf

named-checkzone unixmen.local /var/named/forward.unixmen

zone unixmen.local/IN: loaded serial 2011071001
OK

named-checkzone unixmen.local /var/named/reverse.unixmen 

zone unixmen.local/IN: loaded serial 2011071001
OK

vi /etc/sysconfig/network-scripts/ifcfg-enp0s3

TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
NAME="enp0s3"
UUID="5d0428b3-6af2-4f6b-9fe3-4250cd839efa"
ONBOOT="yes"
HWADDR="08:00:27:19:68:73"
IPADDR0="192.168.1.101"
PREFIX0="24"
GATEWAY0="192.168.1.1"
DNS="192.168.1.101"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"

vi /etc/resolv.conf

nameserver      192.168.1.101

systemctl restart network

dig masterdns.unixmen.local

; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> masterdns.unixmen.local
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25179
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;masterdns.unixmen.local.    IN    A

;; ANSWER SECTION:
masterdns.unixmen.local. 86400    IN    A    192.168.1.101

;; AUTHORITY SECTION:
unixmen.local.        86400    IN    NS    secondarydns.unixmen.local.
unixmen.local.        86400    IN    NS    masterdns.unixmen.local.

;; ADDITIONAL SECTION:
secondarydns.unixmen.local. 86400 IN    A    192.168.1.102

;; Query time: 0 msec
;; SERVER: 192.168.1.101#53(192.168.1.101)
;; WHEN: Wed Aug 20 16:20:46 IST 2014
;; MSG SIZE  rcvd: 125

nslookup unixmen.local

Server:        192.168.1.101
Address:    192.168.1.101#53

Name:    unixmen.local
Address: 192.168.1.103
Name:    unixmen.local
Address: 192.168.1.101
Name:    unixmen.local
Address: 192.168.1.102

yum install bind bind-utils -y

vi /etc/named.conf

//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
options {
listen-on port 53 { 127.0.0.1; 192.168.1.102; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
        memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query     { localhost; 192.168.1.0/24; };
.
.
.
.
zone "." IN {
type hint;
file "named.ca";
};
zone "unixmen.local" IN {
type slave;
file "slaves/unixmen.fwd";
masters { 192.168.1.101; };
};
zone "1.168.192.in-addr.arpa" IN {
type slave;
file "slaves/unixmen.rev";
masters { 192.168.1.101; };
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

systemctl enable named
systemctl start named

ls /var/named/slaves/

unixmen.fwd  unixmen.rev

vi /etc/sysconfig/network-scripts/ifcfg-enp0s3

TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
NAME="enp0s3"
UUID="5d0428b3-6af2-4f6b-9fe3-4250cd839efa"
ONBOOT="yes"
HWADDR="08:00:27:19:68:73"
IPADDR0="192.168.1.102"
PREFIX0="24"
GATEWAY0="192.168.1.1"
DNS1="192.168.1.101"
DNS2="192.168.1.102"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"

vi /etc/resolv.conf

nameserver      192.168.1.101
nameserver      192.168.1.102

systemctl restart network

firewall-cmd --permanent --add-port=53/tcp

firewall-cmd --reload

chgrp named -R /var/named

chown -v root:named /etc/named.conf

restorecon -rv /var/named

restorecon /etc/named.conf

dig masterdns.unixmen.local

; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> masterdns.unixmen.local
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18204
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;masterdns.unixmen.local.    IN    A

;; ANSWER SECTION:
masterdns.unixmen.local. 86400    IN    A    192.168.1.101

;; AUTHORITY SECTION:
unixmen.local.        86400    IN    NS    masterdns.unixmen.local.
unixmen.local.        86400    IN    NS    secondarydns.unixmen.local.

;; ADDITIONAL SECTION:
secondarydns.unixmen.local. 86400 IN    A    192.168.1.102

;; Query time: 0 msec
;; SERVER: 192.168.1.102#53(192.168.1.102)
;; WHEN: Wed Aug 20 17:04:30 IST 2014
;; MSG SIZE  rcvd: 125

dig secondarydns.unixmen.local

; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> secondarydns.unixmen.local
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60819
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;secondarydns.unixmen.local.    IN    A

;; ANSWER SECTION:
secondarydns.unixmen.local. 86400 IN    A    192.168.1.102

;; AUTHORITY SECTION:
unixmen.local.        86400    IN    NS    masterdns.unixmen.local.
unixmen.local.        86400    IN    NS    secondarydns.unixmen.local.

;; ADDITIONAL SECTION:
masterdns.unixmen.local. 86400    IN    A    192.168.1.101

;; Query time: 0 msec
;; SERVER: 192.168.1.102#53(192.168.1.102)
;; WHEN: Wed Aug 20 17:05:50 IST 2014
;; MSG SIZE  rcvd: 125

nslookup unixmen.local

Server:        192.168.1.102
Address:    192.168.1.102#53

Name:    unixmen.local
Address: 192.168.1.101
Name:    unixmen.local
Address: 192.168.1.103
Name:    unixmen.local
Address: 192.168.1.102

vi /etc/resolv.conf

# Generated by NetworkManager
search unixmen.local
nameserver 192.168.1.101
nameserver 192.168.1.102

dig masterdns.unixmen.local

dig secondarydns.unixmen.local

dig client.unixmen.local

nslookup unixmen.local