Data Networking/Fall 2014/Priya/DNS-SERVER

DNS Software
There are many DNS software,out of them most widely used DNS software are:

BIND, Power DNS, Posadis

BIND:

The BIND stands for “Berkeley Internet Name Domain” Since the software originated at the University of California in 1984 at Berkeley written by four  students (Douglas Terry, Mark Painter, David Riggle, and Songnian Zhou), which implements the Domain Name Service protocols frequently known as name daemon (named).

The Developer of BIND is Internet Systems Consortium (ISC) available for free and licensed by ISC license

In the past, BIND has executed mainly three amendments in the architectures such as BIND4, BIND8 and BIND9.

Internet Systems Consortium (ISC) initiated development of a new version BIND 10 but ISC cited a shortfall of resources to prolong development of BIND 10 they conveyed their commitment to BIND9

Power DNS:

The Developer of PowerDns is by PowerDNSCommunity  and Bert hubert which is public Source Coded available free of cost licensed by GPL(GNU General Public license).PowerDNS is the number one supplier of nameserver software written in C++ and licensed under the GPL.PowerDNS is a free software DNS server with a collection of data storage back-ends and load balancing features. It is known for supplying the NameServer software where  Authoritative and recursive server functions are implemented as separate applications.

Posadis:

The Developer of Posadis is Meilof Veeningen which is public source coded for  free of cost, licensed by GPL(GNU General Public license).Posadis is written in C++ featuring Dynamic DNS update support and also a powerful authoritative or caching DNS server

Why BIND ?
BIND is supported and most flexible software out of the three as Comparing on the following functional features and operating systems which it supports as below:

BIND and Power DNS supports features like authoritative, Recursive, Recursion ACL, Slave mode, caching,DNSSEC, TSIG ,IPV6, wildcard,Free Software, Interface, Split horizon. But, Posadis doesnot support these features Domain Name System Security Extensions (DNSSEC), Transaction SIGnature (TSIG), Split horizon.

BIND and Posadis supports the operating systems such as BSD,Solaris,Linux,mac OS X, Windows where as Power DNS is not supported in windows and supported only in beta version of the mac OS X.

Inorder to known about the bind configuration in detail