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Web Proxies

3. Web Proxies. Web Protocols and Practice. WEB PROXIES. Topics. Web Protocols and Practice. WEB PROXIES. Web Proxy Definition. Web Protocols and Practice. WEB PROXIES. Web Proxy Definition. Web Protocols and Practice. WEB PROXIES. Three of the Most Common Intermediaries.

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Web Proxies

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  1. 3 Web Proxies WebProtocolsandPractice

  2. WEB PROXIES Topics WebProtocolsandPractice

  3. WEB PROXIES Web Proxy Definition WebProtocolsandPractice

  4. WEB PROXIES Web Proxy Definition WebProtocolsandPractice

  5. WEB PROXIES Three of the Most Common Intermediaries WebProtocolsandPractice

  6. WEB PROXIES Server 1 Client 1 B GET B GET B Client 2 GET A A GET A GET A Proxy Server 2 Client 3 A Figure 3.1. Proxy as an intermediary between a client and an origin server WebProtocolsandPractice

  7. WEB PROXIES WebProtocolsandPractice

  8. WEB PROXIES Classification of Proxies WebProtocolsandPractice

  9. WEB PROXIES Gateway to non-HTTP Systems WebProtocolsandPractice

  10. WEB PROXIES FTP server Client 1 F F GET ftp-resource F HTTP server Client 2 GET A A A GET mail resource M Mail server Proxy Client 3 M Figure 3.2. Proxy acting as a gateway to FTP,HTTP, and mail servers WebProtocolsandPractice

  11. WEB PROXIES WebProtocolsandPractice

  12. WEB PROXIES Filtering Requests and Responses WebProtocolsandPractice

  13. WEB PROXIES Request-Response Exchange with a Proxy WebProtocolsandPractice

  14. WEB PROXIES DNS server Browser 1 DNS query Origin server 4 DNS query URL Proxy 2 TCP connection 5 TCP connection 3 HTT Request 6 HTT Request 8 HTTP Response 7 HTTP Response 9 optional parallel connection 10 optional parallel connection Figure 3.3. Steps in a browser process with proxy in the path WebProtocolsandPractice

  15. WEB PROXIES WebProtocolsandPractice

  16. WEB PROXIES Handling HTTP Requests and Responses WebProtocolsandPractice

  17. WEB PROXIES Syntactic Requirements WebProtocolsandPractice

  18. WEB PROXIES Semantic Requirements WebProtocolsandPractice

  19. WEB PROXIES Handling HTTP Requests and Responses WebProtocolsandPractice

  20. WEB PROXIES Proxy Chaining and Hierarchies WebProtocolsandPractice

  21. Client Proxy-1 Proxy-2 Proxy-n Origin Server Figure 3.4. Proxy chain on the Web WebProtocolsandPractice

  22. WEB PROXIES WebProtocolsandPractice

  23. WEB PROXIES Proxy Configuration WebProtocolsandPractice

  24. WEB PROXIES Proxy Privacy Issues WebProtocolsandPractice

  25. WEB PROXIES Other kinds of Proxies WebProtocolsandPractice

  26. WEB PROXIES Other kinds of Proxies WebProtocolsandPractice

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