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17. DNS Settings in CentOS 7

#CentOS7学习笔记255
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The DNS server in CentOS7 is configured to resolve domain names to IP addresses. The experiment involves setting up the network environment, installing bind software, configuring bind on CentOS, defining forward and reverse files, and testing DNS on the client side.

DNS Server on CentOS7#

DNS: Domain Name System

Experimental Environment#

  1. CentOS7: 192.168.0.1
  2. Windows7: 192.168.0.100

Experimental Steps#

  1. Configure network environment (connect network cable, configure IP address, disable firewall and SELinux on CentOS)

  2. Install bind software on CentOS

  3. Configure bind on CentOS (first configure /etc/named.conf, then configure /etc/named.rfc1912.zones: define the names and paths of forward and reverse files, finally create and edit forward and reverse files in /var/named)

    Domain name--forward-->IP
    Domain name<--reverse--IP

    Assume: There is a website www.pip.cc (192.168.0.10) and an FTP server ftp.pip.cc (192.168.0.20) in the current network.

  4. Restart DNS service: systemctl restart named

  5. Test DNS on the client side (configure the client first, specify the DNS server; test if the port can be connected, finally test using the nslookup command)

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