DNS Overview

Most records will be A records. This allows the greatest versatility in pointing your domain names where you want them go. Each record consists of a host name and an IP address. Host field: The host name for that particular A record. The host name should be what precedes the .domain.com in your FQDN (fully… Continue reading DNS Overview

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Closing Open Nameservers – DNS recursion

Open nameservers allow anyone in the world to perform queries on them, which can often lead to DOS attacks and slower performance. Some system administrators prefer to have their nameservers restricted to only trust parties. To do this kind of setup, you will need to configure your named configuration: On command line: pico /etc/named.conf Look… Continue reading Closing Open Nameservers – DNS recursion