Set up DNS Server on Linux -Bangla Tutorial
How To Configure Dns Server In Linux:
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A DNS server, or name server, is used to resolve an IP address to a hostname or vice versa.
You can set up four different types of DNS servers:
A master DNS server for your domain(s), which stores authoritative records for your domain.
A slave DNS server, which relies on a master DNS server for data.
A caching-only DNS server, which stores recent requests like a proxy server. It otherwise refers to other DNS servers.
A forwarding-only DNS server, which refers all requests to other DNS servers.
Before configuring BIND to create a DNS server, you must understand some basic DNS concepts.
The entire hostname with its domain such as server.example.com is called a fully qualified domain name (FQDN). The right-most part of the FQDN such as .com or .net is called the top level domain, with the remaining parts of the FQDN, which are separated by periods, being sub-domains.
These sub-domains are used to divide FQDNs into zones, with the DNS information for each zone being maintained by at least one authoritative name server.
The authoritative server that contains the master zone file, which can be modified to update DNS information about the zone, is called the primary master server, or just master server.
The additional name servers for the zone are called secondary servers or slave servers. Secondary servers retrieve information about the zone through a zone transfer from the master server or from another secondary server. DNS information about a zone is never modified directly on the secondary server
Primary DNS Server with Bind9 on Linux 6.3
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DNS Records Concept:
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1. A (Address/Host) records
2. DNS AAAA records resource records map hostnames to their 128 bit IPv6 address.
3. PTR (Pointer) records(IP address to their corresponding hostname/DNS lookups)
4.CNAME (canonical Name) records(Alias of one name to another hostname)
5.DNAME(delegation name) records [Alias for all sub-names,unlike CNAME)
6. MX records(MAIL EXCHANGER) : [domain name to list of message transfer agents(MTAs).
7.NS records [denote the authoritative name server for a domain]
8.SOA (Start of authority record): [specifies authoritative information about a DNS zone]
Required Packages:
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1.bind
2.bind-chroot
3.bind-devel
4.bind-utils
5.bind-libs
6.bind-dyndb
[for yum: yum install bind* -y]
Configuration Files:
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/etc/sysconfig/network-scripts/ifcfg-eth0
/etc/sysconfig/network
/etc/hosts
/etc/resolv.conf
/etc/named.conf
/etc/named.rfc1912.zones
more information or command :
www.kazipurit.blogspot.com
FB/monirprofile
TW/monirprofile
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