DDNS实施步骤

1. 安装 dhcp bind bind-utils caching-nameserver bind-devel
2. dnssec-keygen -a HMAC-MD5 -b 128 -n USER myddns
3. named.caching-rfc1912.zones.conf
    key myddns {
           algorithm HMAC-MD5;
           secret   secret-string;
};
     zone "samsun.com." {
             type master;
             file samsun.com.zone;
             allow-update {key myddns;};
};
    zone "100.168.192.in-addr.arpa." {
               type master;
               file 100.168.192.in-addr.arpa.zone
                allow-update {key myddns;};
};
创建 samsun.com.zone 和 100.168.192.in-addr.arpa.zone 文件
chmod g+w /var/named/chroot/var/named/

4. dhcpd.conf

key myddns {
             algorithm  HMAC-MD5;
             secret   secret-string;
};

zone samsun.com. {
            primary dnsip;
            key myddns;
}

zone 100.168.192.in-addr.arpa. {
            primary dnsip;
            key myddns;
}

5. /etc/init.d/dhcpd start   /etc/init.d/named start   chkconfig named on   chkconfig dhcpd on
6. windows 客户端无需配置
7. linux客户端
      在/etc/下新建dhcpclient.conf配置文件

send fqdn.fqdn "Linux";

send fqdn.encoded on;

send fqdn.server-update off;

运行 dhcpclient 命令


8. 也可以在dns server上执行dnsupdate命令测试
nsupdate
>server 127.0.0.1
> update add test.samsun.com 600 A 192.168.100.40
> send