Reverse proxy
- 1. Date: 2019/ 10/ 30 Presenter : L Reverse proxy Introduction
- 2. Outline 1. Introduction and Background 2. Compare to Forward proxy 3. Benefits from Reverse proxy 4. Conclusion
- 3. Introduction and background A reverse proxy is a server that sits in front of web servers and forwards client (e.g. web browser) requests to those web servers. Reverse proxies are typically implemented to help increase security , performance, and reliability.
- 4. Introduction and background User’s device send requests to origin servers from the Internet, then a reverse proxy taking requests and forwarding them to origin servers.
- 5. Introduction and background Sometime user’s device didn’t even know the service is from reverse proxy, this help improving the security.
- 6. Compare to Forward proxy A forward proxy is a server act like a client. A client send requests to a forward proxy which is able to do something that the client can’t do, then the forward send requests to origin server.
- 7. Compare to Forward proxy Reverse proxy Forward proxy Proxy object Server User hide the existence of user hide the existence of origin server speed up loading times Set up by Server User Server’s loading balance Security A web site or service never needs to reveal the IP address of their origin server Pretending hacker from attacking computers.
- 8. Benefits from Reverse proxy Security - Since reverse proxy can hide the existence and characteristics of an origin server or servers, it can protect against common web-based attacks, like a denial-of-service attack (DoS) or distributed denial-of-service attacks (DDoS).
- 9. Benefits from Reverse proxy Loading balance – A reverse proxy can provide a load balancing solution which will distribute the incoming traffic evenly among the different servers to prevent any single server from becoming overloaded. In the event that a server fails completely, other servers can step up to handle the traffic.
- 10. Benefits from Reverse proxy Speed up – There’s two method to speed up: 1.A reverse proxy can optimize content by compressing it in order to speed up loading times. 2.A reverse proxy can cache the content, next time a client requests the some content, it don’t need to request the origin server again.
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Editor's Notes
- #6: because the D2D link is capacity-limited and subject to transmission latency.
- #7: because the D2D link is capacity-limited and subject to transmission latency.
- #10: Fig. 2 shows that our DoA scheme could obtain performance comparable to the ideal case. That is, ∆R between the ideal case and our DoA scheme is quite small as SNR at the receiver increases.