This document discusses various types of proxy servers including anonymous proxy servers, HTTP proxy servers, FTP proxy servers, caching proxy servers, content filtering proxy servers, reverse proxy servers, and ICAP servers. It provides details on their functions and purposes. Team members on the Awesum4sum project are listed and an index outlines topics covered which include introduction to proxy servers, advantages and disadvantages, and a demonstration on CC Proxy.

1. Awesum4sum

2. Team MembersLisha Murthy (1MS07IS041)Anitha B. S (1MS07IS005)Caroline I (1MS07IS017)Prabha P (1MS07IS068)

3. IndexIntroduction to Proxy ServerAnonymous Proxy ServerHTTP Proxy Server FTP Proxy ServerCachingContent FilteringICAPReverse Proxy ServerAdvantages and Disadvantages of Proxy ServerDemonstration on CC Proxy

4. PROXY SERVER

5. WHAT IS A PROXY SERVER

6. Client sends a requestServer provides the servicesCLIENTWEB SERVER

7. PROXY SERVERSends request to the Proxy ServerMakes requests for the clientCLIENTWEB SERVER

8. ANONYMOUS PROXY SERVERS

9. WHY DO WE NEED AN ANONYMOUS PROXY SERVER Web resources can collect information aboutyou, using your IP address.You might be targeted by the marketers who send regular spam and junk e-mails.A website can automatically exploit the security holes in your system.

10. WHAT IS AN ANONYMOUS PROXY SERVER Anonymous Proxy Server hides your IP address.192.245.17.1201.124.17.1They do not let anyone know what you are surfing.

11. When few sites are blocked by the internet providers in certain countries or geographical areas, anonymous proxy servers can be used.

12. Anonymous surfing proxy sites They allow you to enter the address (URL) of the site you wish to go to at the anonymous surfing proxy site. The site will retrieve the page for you and present it to you. The site you visit will not receive any particulars about your system.

13. Introduction to HTTP

14. HypertextorHyperlinks

15. Thus formed Internet…

16. Ideal Scenario

17. With Proxy

18. FTP

19. File Sharing Over Windows LAN

20. FTP

21. P2P

22. Email

23. Online sharingFile Transfer Protocol

24. FTP Proxy Servers

25. Available applications for both HTTP and FTP Proxy servers Web browsers

26. Proxy Chains

27. Download managers

28. Operating system (with lots of configuration)

29. CacheIt is a collection of dataduplicating original valuesstored elsewhere

30. Caching proxy server

31. Page-fetch algorithm Check cache for existing copy of object

32. If it exists in cache…….

33. If object is not in cache, expired, or otherwise invalidated…….Cacheable objectsHTTP

34. FTP Non-cacheable objects HTTPS

35. WAISContent filtering proxy serverContent filtering is theprocess of removing certain content from the internet before it gets to the user that requested that User.Eg: Twilight utilities proxy server Safeguard content filtering proxy.

36. Internet Content Adaptation Protocol (ICAP)ICAP servers are focused on a specific function, for example, add insertion, virus scanning, content translation, language translation, or content filtering.ICAP allows its clients to pass HTTP based (HTML) messages (Content) to ICAP servers for adaptation (content manipulation).

37. Functions of icapFor request modification……. ….redirection, header filtering, etc.For response modification……. …. virus scanning, content modification, block inappropriate content, etc.

38. REVERSE PROXY

39. WEB SERVERCLIENT 1CLIENT 3CLIENT 2

40. FORWARD PROXY SERVERWEB SERVERINTERNETPROXY SERVERCLIENT 1CLIENT 3CLIENT 2

41. REVERSE PROXY SERVERWEB SERVERINTERNETREVERSE PROXY SERVERCLIENT 3CLIENT 1CLIENT 2