Alternative DNS Servers: Choice and Deployment, and Optional by Jan-Piet Mens

By Jan-Piet Mens

Supplying an entire survey of DNS (Domain identify approach) servers, this reference outlines the main compatible sorts of servers for various eventualities. Addressing functionality and protection concerns, this source describes intimately the proper eventualities for every server. extra themes mentioned comprise how DNS info may be saved in LDAP (Lightweight listing entry Protocol) directories or SQL databases in addition to the right way to build powerful DNS structures.

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Additional info for Alternative DNS Servers: Choice and Deployment, and Optional SQL LDAP Back-Ends

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Perl DNS Nameserver: Net::DNS::Nameserver example . . . Perl DNS Nameserver: Net::DNS::Server example . . . . User Defined RAISE ERROR Function for MySQL . . . . Trigger uses raise error() UDF . . . . . . . . . UDF that “touches” a file on the file system . . . . . . Query TXT RR for pms URL . . . . . . . . . . . Determine geographic location of Apache clients . . . . Lua-enabled getconfig() function retrieves a variable . . . Example Lua function for nxdomain .

Handling Service (SRV) queries in Perl . . . . . . . Perl DNS Nameserver: Net::DNS::Nameserver example . . . Perl DNS Nameserver: Net::DNS::Server example . . . . User Defined RAISE ERROR Function for MySQL . . . . Trigger uses raise error() UDF . . . . . . . . . UDF that “touches” a file on the file system . . . . . . Query TXT RR for pms URL . . . . . . . . . . . Determine geographic location of Apache clients . . . . Lua-enabled getconfig() function retrieves a variable .

Chapter 3 explains what you will need to set up the name servers that we cover, and introduces you to dig, the DNS lookup tool. Chapter 1 Introduction to the DNS When you have disciplined thought, you don’t need bureaucracy. 4 Scenarios of name server deployment Introduction This chapter is a quick introduction to the Domain Name System. We fast-forward you over the terminology we’ll need throughout the book, and in particular explain the different types of functions performed by name servers, how they are commonly named, and where you locate your servers on your network.

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