Hypertext is words/ phrases/ images which upon a click or stroke from the keyboard redirects to the related page. Thus hypertext (hyperlinks) forms a sort of network of related data.
This kind of networking led to the implementation of Internet by Tim Berners Lee.
Ideal scenario would have been that all the systems be connected to the Internet directly. Any request/ response transaction involves only two entities like in the case of mobile phones where in this case the client system requests something from the server and the server responds back.
But in case of institutions or organizations where tend to block certain sites which are often found very useful to the people there there arises the need for proxy server. Like the telephone operators in olden days, proxy servers intercept the requests and finally our goal is achieved through an alternate IP address.
Transcript of "Group18_Awesome4some:Proxy server.ppt"
Team Members<br />Lisha Murthy (1MS07IS041)<br />Anitha B. S (1MS07IS005)<br />Caroline I (1MS07IS017)<br />Prabha P (1MS07IS068)<br />
Index<br />Introduction to Proxy Server<br />Anonymous Proxy Server<br />HTTP Proxy Server <br />FTP Proxy Server<br />Caching<br />Content Filtering<br />ICAP<br />Reverse Proxy Server<br />Advantages and Disadvantages of Proxy Server<br />Demonstration on CC Proxy<br />
WHY DO WE NEED AN<br /> ANONYMOUS PROXY SERVER <br />Web resources can collect information about<br />you, using your IP address.<br />You might be targeted by the marketers who send regular spam and junk e-mails.<br />A website can automatically exploit the security holes in your system.<br />
WHAT IS AN ANONYMOUS PROXY SERVER <br />Anonymous Proxy Server hides your <br />IP address.<br />184.108.40.206<br />220.127.116.11<br />They do not let anyone know what you are surfing.<br />
When few sites are blocked by the internet providers in certain countries or geographical areas, anonymous proxy servers can be used.<br />
Anonymous surfing proxy sites<br /> They allow you to enter the address (URL) of the site you wish to go to at the anonymous surfing proxy site.<br /> The site will retrieve the page for you and present it to you.<br /> The site you visit will not receive any particulars about your system. <br />
WAIS</li></li></ul><li>Content filtering proxy server<br />Content filtering is the<br />process of removing certain content from the internet before it gets to the user that requested that User.<br />Eg: Twilight utilities proxy server<br /> Safeguard content filtering proxy.<br />
Internet Content Adaptation Protocol (ICAP)<br />ICAP servers are focused on a specific function, for example, add insertion, virus scanning, content translation, language translation, or content filtering.<br />ICAP allows its clients to pass HTTP based (HTML) messages (Content) to ICAP servers for adaptation (content manipulation).<br />
SECURITY<br />WEB SERVER<br />INTERNET<br />REVERSE PROXY<br />Acts as a additional layer of defense and protects against some OS and Web server specific attacks.<br />
CACHING<br />WEB SERVER<br />Can offload the web server by caching most frequently used web pages.<br />INTERNET<br />cache<br />
LOAD BALANCING<br />WEB SERVER<br />INTERNET<br />Less load on the server as the cache stores the static web pages<br />cache<br />
COMPRESSION<br />Awesum 4sum<br />Awesum 4sum<br />Compress content before delivering it to site visitors to optimize load times.<br />
TUNNELING<br />WEB SERVER<br />INTERNET<br />Proxy server<br />It is a web-based page that takes a site that is blocked and "tunnels" it, allowing the user to view blocked pages.<br />CLIENT 1<br />
ADVANTAGES<br /><ul><li>Remain anonymous to the server.