DNS queries: How does your browser find www.example.com? How does your mail software know where to send your outgoing e-mail? Such operations use DNS queries.
Reverse mapping: How does your mail software determine your identity? How do you find out who is hacking your system? These types of operations use a technique known as reverse mapping.
Zone maintenance: How does the address of your new FTP service get propagated across the Internet? How are your customers notified of any change to your e-mail provider? These operations use zone maintenance.
DNS security: How do you prevent your web site from being hijacked? How do you ensure that your e-mail is delivered to you and not someone else? In this chapter, you’ll learn key DNS security concepts.
KeywordsSerial Number Reverse Mapping Zone Transfer IPv4 Address Mail Server
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