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DNS is a distributed database that allows local administration of the
segments on the overall database. Data in each segment of the database
are available across the entire network through a client-server scheme
consisting of name servers and resolvers.
What is a DNS record?
People are much more comfortable dealing with names rather than
strings of numbers. A domain name such as “cobalt.com” is much easier
to remember than the IP address which consists of four octets of
numbers such as 207.91.131.30. Domain names must be registered with
Root Domain Registration Service, such as Network Solutions, Inc.
(www.networksolutions.com)
Computers, on the other hand, prefer numbers to names. Since
computers have the final say when a user is looking for a company Web
site, a mechanism is needed to convert the human-friendly domain name
to the computer-friendly IP address.
DNS records on a DNS server perform this function. The records
translate a domain name to an IP address; a record equates a domain
name such as “cobalt.com” to an IP address such as 207.91.131.30.
Once the domain name has been converted or “resolved” to an IP
address, then (and only then) can the user connect to your Web site.
Without DNS and domain names, the user would be required to
remember the IP address of every site they wanted to visit. With DNS
servers and DNS records, customers and their software can easily
remember how to get to your site.
Who manages your DNS records?
Your DNS records can reside on any Cobalt server that has the DNS
service enabled. You or your administrator can easily configure a Cobalt
server to act as a DNS server. To provide DNS service, InterNIC
requires a site to maintain both a primary and a secondary server. Your
Cobalt server can act as the primary server and a DNS server from your
Internet service provider (ISP) can act as the secondary server.
How does DNS work?
The basic method that allows a domain name to direct customers to your
Web site is shown in Figure 59. This diagram describes a request made
by a Web browser as the customer attempts to log on to your Web site.
Summary of Contents for Cobalt Qube 2
Page 1: ...Cobalt QubeTM 2 User Manual...
Page 6: ...vi...
Page 20: ...Chapter 1 6 Figure 3 Administrator Site screen Figure 4 Public Site screen...
Page 26: ...Chapter 1 12...
Page 68: ...Chapter 3 54...
Page 70: ...Chapter 4 56 Figure 17 Administrator Site screen...
Page 76: ...Chapter 4 62 Figure 19 shows the User Defaults table Figure 19 User Defaults table...
Page 78: ...Chapter 4 64 Figure 20 shows the Add New User table Figure 20 Add New User table...
Page 87: ...Administrator Site 73 Figure 24 shows the Add New Group table Figure 24 Add New Group table...
Page 184: ...Appendix B 170...
Page 206: ...Appendix E 192...
Page 218: ...Appendix F 204...