Ubuntu DNS Server

广州市宜兰科技有限公司 Ubuntu DNS Server 配置 一、DNS说明 DNS使用端口号:53 正解与反解说明: 正解:通过Domain(DNS下的hostname)应射IP;通过hostname去找IP 反解:通过IP反查hostname Zone(区域):一个正解或一个反解的设定就是一个zone 二、安装DNS的套件:BIND9 sudo apt-get install BIND9 查看安装后的相关目录文件:sudo dpkg – L bind9 查看端口是否已启动:netstat – tunlp | grep 53 三、DNS设定: 配置环境:DNS Server IP:192.168.1.254 ,hostname:samba.elantech.com 在DNS Server下的配置文件有如下: /etc/bind/named.conf.options //全局设置 /etc/bind/named.conf.default-zone //添加或删除zone的配置 /etc/bind/db.127 //本机反解 /etc/bind/db.local //本机正解 四、DNS Server 配置: 配置步骤如下: 1、修改全局选项sudo vi /etc/bind/named.conf.options 转发的IP地址修改成广东电信的DNS IP: forwarders { 202.96.128.143; }; 2、添加zone sudo vi /etc/bind/named.conf.default-zone 添加2个zone ,“db.elantech.com”用来正解、“db.192”是用来反解 zone "elantech.com" { type master; file "/etc/bind/db.elantech.com"; }; 1 zone "1.168.192.in-addr.arpa" { type master; file "/etc/BIND/db.192"; }; 3、设定DNS的正解:sudo cp /etc/bind/db.local /etc/bind/db.elantech.com root@samba:/etc/bind# vi db.elantech.com ; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA elantech.com. root.elantech.com. ( 2 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; @ IN NS elantech.com. @ IN A 192.168.1.254 samba IN A 192.168.1.254 4、设定DNS的反解: sudo cp /etc/bind/db.127 /etc/bind/db.192 root@samba:/etc/bind# vi db.192 ; ; BIND reverse data file for local loopback interface ; $TTL 604800 @ IN SOA elantech.com. root.elantech.com. ( 1 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; @ IN NS elantech.com. 1.0.0 IN PTR samba.elantech.com. 254 IN PTR samba.elantech.com. 5、启动bind服务:sudo /etc/inti.d/bind9 restart 6、查看启动bind服务的日志:tail /var/log/syslog root@samba:/etc/BIND# tail /var/log/syslog Aug 3 10:15:14 samba named[1228]: command channel listening on ::1#953 Aug 3 10:15:14 samba named[1228]: zone 0.in-addr.arpa/IN: loaded serial 1 Aug 3 10:15:14 samba named[1228]: zone 127.in-addr.arpa/IN: loaded serial 1 Aug 3 10:15:14 samba named[1228]: zone 1.168.192.in-addr.arpa/IN: loaded serial 1 Aug 3 10:15:14 samba named[1228]: zone 255.in-addr.arpa/IN: loaded serial 1 Aug 3 10:15:14 samba named[1228]: zone elantech.com/IN: loaded serial 2 Aug 3 10:15:14 samba named[1228]: zone localhost/IN: loaded serial 2 Aug 3 10:15:14 samba named[1228]: managed-keys-zone ./IN: loading from master file managed-keys.bind failed: file not found Aug 3 10:15:14 samba named[1228]: managed-keys-zone ./IN: loaded serial 0 Aug 3 10:15:14 samba named[1228]: running 7、在本机(192.168.1.254)上设置DNS :sudo /etc/resolv.conf 添加一行, nameserver 192.168.1.254 五、测试DNS 1、在DNS Server端 命令:host samba.elantech.com (正解) samba.elantech.com has address 192.168.1.254 命令:host 192.168.1.254 (反解) 254.1.168.192.in-addr.arpa domain name pointer samba.elantech.com. 2、在客户端 命令:nslookup www.baidu.com C:\Documents and Settings\Administrator>nslookup www.baidu.com Server: samba.elantech.com Address: 192.168.1.254 Non-authoritative answer: Name: www.a.shifen.com Addresses: 220.181.112.143, 220.181.111.148 Aliases: www.baidu.com