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Internet Service Provider Services

Internet Service Provider Services. What to do once you’re connected. Dial-in access. Provides LAN and WAN access Requires a computer at the remote end Connects them as though they were on the LAN. Domain Name Service (DNS). Maps Hostnames such as www.unm.edu to IP addresses

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Internet Service Provider Services

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  1. Internet Service Provider Services What to do once you’re connected.

  2. Dial-in access • Provides LAN and WAN access • Requires a computer at the remote end • Connects them as though they were on the LAN

  3. Domain Name Service (DNS) • Maps Hostnames such as www.unm.edu to IP addresses • a domain is hosted by one authoritative DNS server • sub-domains can be delegated • domains are registered with ANS

  4. Internet Routing • Provides dial-in users with a gateway to the Internet • Carries with it greater risks and liability • Requires a high-speed link to the Internet

  5. Email • Stick with Standards • SMTP, MIME, POP, IMAP • Requires a server • Disconnectable clients are preferable

  6. WWW Service • HTML - Hypertext Markup Language • Requires a WWW server which runs httpd • Hypertext Transport Protocol Daemon • Clients access the server using a browser, which interprets and displays HTML

  7. WWW Service • WWW is typically an anonymous service • Hypertext documents containing ‘links’ • URL - Uniform Resource Locator • http://mhpcc.unm.edu/index.html

  8. Secured WWW Service • Allows authentication (a login) • Allows encryption of the data between the client and the server • Allows authentication of the server by using a key escrow service

  9. WWW Hosting • Allows customers to have a WWW site without managing a server • Who creates the content? • Who puts it in place? • Users are typically charged according to disk space quota

  10. Domain Hosting • You can provide domain name service (DNS) for more than one domain on one server • The domains you host must be registered with ANS to work properly • The domains you host do not have to be ‘like’ yours

  11. FTP Service • File Transfer Protocol - ‘get’ and ‘put’ most kinds of data • Good for delivering software and other large files • Can be used anonymously, but don’t allow anonymous uploads • Content based on directory and file structure

  12. Shell Accounts • Allows interactive sessions on a host computer • Typically using Telnet • Often on a Unix server • Disk storage and Quotas

  13. Directory Service and Real.Name Email Addressing • Provides a way to find people • A database of real names, login IDs, and other information • The CSO and X.500 protocols are widely used

  14. Auto Setup Software • Installs and configures client software • Sets up dial-in connections • Detects problems

  15. Support • Help Desk • WWW pages • On-call personnel • Automatic Problem detection & resolution

  16. Accounting • Important for security • Aids in capacity planning • Built into most services and operating systems

  17. Billing • Connect time • Disk storage • CPU usage • Service Level & Special Services

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