© Copyright 1997, The University of New Mexico C-1

Internet Service Provider Services

What to do once you’re connected.

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-5

Email

• Stick with Standards– SMTP, MIME, POP, IMAP

• Requires a server• Disconnectable clients are preferable

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-7

WWW Service

• WWW is typically an anonymous service• Hypertext documents containing ‘links’• URL - Uniform Resource Locator

– http://mhpcc.unm.edu/index.html

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-12

Shell Accounts

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

© Copyright 1997, The University of New Mexico C-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

© Copyright 1997, The University of New Mexico C-14

Auto Setup Software

• Installs and configures client software• Sets up dial-in connections• Detects problems

© Copyright 1997, The University of New Mexico C-15

Support

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

© Copyright 1997, The University of New Mexico C-16

Accounting

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

© Copyright 1997, The University of New Mexico C-17

Billing

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