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Networks
Overview of a Network
Web
Ftp
Newsgroups
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The Network Structure
A network is a bunch of computers and other hardware connected together
The Local Area Network The outside network
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Topology
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Common Uses of a Network
Email Web access File transfer Newsgroups Remote access
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The Internet
A global network sharing resources
World Wide Web (WWW)
Email File transfer
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World Wide Web (WWW)
Web browser like Netscape used to navigate web sites
Easy to navigate and find information due to the hyper linked nature
Netscape, lynx and Internet Explorer
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What is email? Mail readers – pine Other mail readers –
mutt, elm
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Proxy Server
What is a proxy server? Need for proxy Setting up proxy in
Netscape Setting up proxy for lynx Differences between
local sites and outside ones
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File Transfer Protocol (FTP)
Transfer files to and from a computer
Bare–bones ftp program Alternatives like ncftp
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Example FTP Session
STEP BY STEP1. Starting FTP
2. Logging in– User ID and password– Anonymously
3. Transferring files
4. A few features
5. Logging Out
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Newsgroups
What is a newsgroup News reader tin Other news readers like
pine, slrn
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News Agent Tin
STEP BY STEP1. Export the environment
variable NNTPSERVER
2. Starting tin
3. Subscribing to newsgroups
4. Posting a sample message
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Remote Access
What it means Telnet and ssh Putty client on Windows Remote execution
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Useful Resources
Online documentation to almost everythinghttp://docs.cse.iitb.ac.in:8080
Computer Center’s User Guidehttp://www.cc.iitb.ac.in/userman/user_man.html
A large collection of online books, documents and tutorialshttp://tilak.ee.iitb.ac.in
A nice FAQhttp://www.cse.iitb.ac.in/cslabs/swlab/faq.html
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Useful Resources (Cont …)
A large collection of online books, documents and tutorialshttp://tilak.ee.iitb.ac.in
Tilak FTP Searchhttp://tilak.ee.iitb.ac.in/ftpsearch
Anonymous FTP sites– ftp://ftp.cse.iitb.ac.in– ftp://ftp.cc.iitb.ac.in– ftp://ftp.it.iitb.ac.in
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Summary
What of a Network Network Topology The Internet Proxy Server World Wide Web Step by Step procedures
Email FTP Newsgroups Remote access covering
Telnet and ssh A few useful local sites
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