networks overview of a network email web ftp newsgroups

Networks

Overview of a Network

Email

Web

Ftp

Newsgroups

The Network Structure

A network is a bunch of computers and other hardware connected together

The Local Area Network The outside network

Topology

Common Uses of a Network

Email Web access File transfer Newsgroups Remote access

The Internet

A global network sharing resources

World Wide Web (WWW)

Email File transfer

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

Email

What is email? Mail readers – pine Other mail readers –

mutt, elm

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

File Transfer Protocol (FTP)

Transfer files to and from a computer

Bare–bones ftp program Alternatives like ncftp

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

Newsgroups

What is a newsgroup News reader tin Other news readers like

pine, slrn

News Agent Tin

STEP BY STEP1. Export the environment

variable NNTPSERVER

2. Starting tin

3. Subscribing to newsgroups

4. Posting a sample message

Remote Access

What it means Telnet and ssh Putty client on Windows Remote execution

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

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

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