Chapter 26: DNS

In this chapter, you will

  • Learn about the Domain Name Service (DNS)

  • Discover how to configure a DNS server

  • Review the configuration of DNS clients

Although Solaris 9 has its own naming service, known as the Network Information Service (NIS), support is also provided for DNS, which maps IP addresses to hostnames. Every computer that is connected to the Internet must have an IP address, which identifies it uniquely within the network. For example, 192.18.97.241 is the IP address of the web server at Sun. IP addresses are hard for humans to remember, and don t adequately describe the network on which a host resides. Thus, by examining the Fully Qualified Domain Name (FQDN) of 192.18.97.241 ” www.sun.com ” it s immediately obvious that the host www lies within the sun.com domain. The mapping between human-friendly domain names and machine-friendly IP addresses is performed by a distributed naming service, known as the Domain Name Service (DNS). In this chapter, we examine how DNS servers manage records of network addresses, and how this information can be accessed by Solaris applications. In addition, we examine how to build and configure the latest version of the Berkeley Internet Daemon (BIND) from source, just in case security issues leave your existing Berkeley Internet Daemon (BIND) service vulnerable to attack.

 
 
   


Sun Certified Solaris 9.0 System and Network Administrator
Sun Certified Solaris(tm) 9 System and Network Administrator All-in-One Exam Guide
ISBN: 0072225300
EAN: 2147483647
Year: 2003
Pages: 265
Authors: Paul Watters

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