Sample zone file bind

Search web zytrax. All rights reserved. Legal and Privacy site by zytrax web-master at zytrax Page modified: March 14 Legal and Privacy. What's New. ISP Services. Contact Us. This guide is aimed at people looking to learn how to configure and maintain a DNS server, such as for a network caching name server or to serve DNS zones for a domain name. No additional repository needs to be enabled for BIND9. Before we begin, you should be familiar with RootSudo. To install the server simply install the bind9 package.

See InstallingSoftware for details on using package managers. A very useful package for testing and troubleshooting DNS issues is the dnsutils package. Some of the most useful setups are: Caching Server In this configuration BIND9 will find the answer to name queries and remember the answer for the next query.

This can be useful for a slow internet connection. By caching DNS queries, you will reduce bandwidth and more importantly latency. Primary Master Server BIND9 can be used to serve DNS records groups of records are referred to as zones for a registered domain name or an imaginary one but only if used on a restricted network.

Secondary Master Server A secondary master DNS server is used to complement a primary master DNS server by serving a copy of the zone s configured on the primary server. Secondary servers are recommended in larger setups. If you intend to serve a registered domain name they ensure that your DNS zone is still available even if your primary server is not online.

All that is required is simply combining the different configuration examples. These are effectively the same as Primary and Secondary DNS servers, but with a slight organizational difference. A is the Primary, B and C are secondaries. It's still a secondary, but it's not going to be asked about the zone you are serving to the internet from A and B If you configure your registered domain to use B and C as your domain's DNS servers, then A is a stealth primary.

Any additional records or edits to the zone are done on A, but computers on the internet will only ever ask B and C about the zone. Address Records The most commonly used type of record. This record maps an IP Address to a hostname. But it doubles the number of requests made to the nameserver, thus making it an inefficient way to do so.

Multiple MX records can exist if multiple mail servers are responsible for that domain. As you make changes to your zone file, the serial number will increase. Time To Refresh — How long in seconds a nameserver should wait prior to checking for a Serial Number increase within the primary zone file. An increased Serial Number means a transfer is needed to sync your records. Only applies to zones using secondary DNS. Time To Retry — How long in seconds a nameserver should wait prior to retrying to update a zone after a failed attempt.

Time To Expire — How long in seconds a nameserver should wait prior to considering data from a secondary zone invalid and stop answering queries for that zone.