{"id":19432,"date":"2024-03-15T18:51:38","date_gmt":"2024-03-15T18:51:38","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-set-up-a-dns-resolver-server-on-centos-7\/"},"modified":"2024-03-21T15:41:18","modified_gmt":"2024-03-21T15:41:18","slug":"how-to-set-up-a-dns-resolver-server-on-centos-7","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-set-up-a-dns-resolver-server-on-centos-7\/","title":{"rendered":"How to set up a DNS resolver server on CentOS 7?"},"content":{"rendered":"

To set up a DNS resolver server on CentOS 7, you can follow the steps below:<\/p>\n

    \n
  1. Install the bind software package.<\/li>\n
  2. Please use the command “sudo yum install bind bind-utils” to install the necessary packages.<\/li>\n
  3. Edit the main configuration file:
    \nOpen the main configuration file \/etc\/named.conf and make the following modifications to it:<\/li>\n
  4. Add the following lines below the options section to configure the IP address and domain name of the DNS server:
    \nlisten-on port 53 { any; };
    \nlisten-on-v6 port 53 { ::1; };
    \nallow-query { any; };
    \nallow-transfer { none; };
    \nallow-recursion { localhost; };
    \nrecursion yes;<\/li>\n
  5. Comment out the path to the \/etc\/named.iscdlv.key file, as it does not exist in CentOS 7.<\/li>\n
  6. Create a zone file:
    \nCreate the following zone file in the \/etc\/named directory:<\/li>\n
  7. Create a main zone file named example.com.zone and add the following content to the file (replace example.com with your own domain name): $TTL 86400
    \n@ IN SOA ns1.example.com. admin.example.com. (
    \n 2019100101 ; Serial
    \n 3600 ; Refresh
    \n 1800 ; Retry
    \n 604800 ; Expire
    \n 86400 ; Minimum TTL
    \n )
    \n@ IN NS ns1.example.com.
    \n@ IN A DNS server IP address
    \nwww IN A server IP address<\/li>\n
  8. Configure reverse resolution area files: Create the following reverse resolution area files in the \/etc\/named directory (replace the x in the IP addresses with the actual IP address):<\/li>\n
  9. Create a reverse lookup file named x.x.x.in-addr.arpa.zone and add the following content to the file (replace the ‘x’ in the IP address with the actual IP address):
    \n$TTL 86400
    \n@ IN SOA ns1.example.com. admin.example.com. (
    \n 2019100101 ; Serial
    \n 3600 ; Refresh
    \n 1800 ; Retry
    \n 604800 ; Expire
    \n 86400 ; Minimum TTL
    \n )
    \n@ IN NS ns1.example.com.
    \nx IN PTR example.com.<\/li>\n
  10. Set up a firewall:
    \nIf your CentOS 7 server has a firewall such as iptables, make sure to allow DNS traffic to pass through. You can enable DNS traffic using the following command:<\/li>\n
  11. Add the DNS service to the firewall permanently and then reload the firewall.<\/li>\n
  12. Start and enable the bind service.<\/li>\n
  13. Start and enable the named service using systemctl.<\/li>\n<\/ol>\n

    After completing the above steps, your CentOS 7 server should have set up a DNS resolving server. To test if it is functioning correctly, you can use the nslookup command or other DNS resolving tools to query domain name resolution.<\/p>\n","protected":false},"excerpt":{"rendered":"

    To set up a DNS resolver server on CentOS 7, you can follow the steps below: Install the bind software package. Please use the command “sudo yum install bind bind-utils” to install the necessary packages. Edit the main configuration file: Open the main configuration file \/etc\/named.conf and make the following modifications to it: Add the […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-19432","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow to set up a DNS resolver server on CentOS 7? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-set-up-a-dns-resolver-server-on-centos-7\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to set up a DNS resolver server on CentOS 7?\" \/>\n<meta property=\"og:description\" content=\"To set up a DNS resolver server on CentOS 7, you can follow the steps below: Install the bind software package. Please use the command “sudo yum install bind bind-utils” to install the necessary packages. 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