Build a DNS server in Centos6 Environment

Build a DNS server in Centos6 Environment

Configure the domain master server

Phase:

1. Add the domain to the bind main configuration file

2. Create the zone file for this domain in/var/named.

3. Edit the zone file and add the required information.

4. check firewall or selinux settings

5. Start the bind Service

6. Run the host or nslookup command to check whether the domain information is normal.

Install bind

Yum install-y bind-chroot bind-utils

The BIND configuration file is saved in:

/Etc/named. conf main configuration file

/Var/named/domain zone File Location

Modify the main configuration file

Vim/etc/named. conf (for example, 1)

After modification, save and exit.

Configure the zone File

Modify the zone configuration file vim/etc/named. rfc1912.zones (for example, 2)

Configure forward resolution (e.g)

Cd/var/named/

Cp named. localhost helome.com. zone

Vim helome.com. zone (it must be consistent with the zone file name defined in the main configuration file)

Configure reverse resolution (for example, 2)

Cp named. localhost 32.16192.zone

Vim 32.16192.zone

Save and exit!

Change firewall settings and selinux settings

Getenforce

Setenforce 0

Iptables-F (as shown in) or vim/etc/sysconfig/iptables # configure the firewall port (as shown in figure 2)

-AINPUT-m state -- state NEW-m tcp-p tcp -- dport 53-j ACCEPT

-AINPUT-m state -- state NEW-m udp-p udp -- dport 53-j ACCEPT

-AINPUT-m state -- state NEW-m tcp-p tcp -- dport 953-j ACCEPT

Service iptables save

Service iptables restart # restart the firewall to make the rule take effect

Start bind

Service named start

Modify the/etc/resolv. conf file

Vim/etc/resolv. conf

Test whether domain information is normal

Check whether the configuration file has the read permission ll/var/named (if there is no chmod + r/var/named)

Use the host or nslookup command to check whether the domain information is normal, as shown in)

Host mail.helome.com

Nslookup mail.helome.com

The establishment of the DNS server is complete.

Error-prone during bind file configuration

Run the following command to check the bind configuration file and zone File Syntax:

Named-checkconf/etc/named. conf

Named-checkzone helome.com/var/named/helome.com. zone

Check whether the configuration file has read permission.