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Proxies (Full Proxies (F5) (A full proxy maintains two separate…
Proxies
Full Proxies (F5)
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Example: difference of bandwidth connection between client side and lan side where our servers are hosted
A full proxy completely understands the protocols and is itself an endpoint and an originator for the protocols
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Because the full proxy is an actual protocol endpoint, it must fully implement the protocols as both a client and a server (a packet-based design does not)
This also means the full proxy can have its own TCP
connection behavior, such as buffering, retransmits, and TCP options
We can also take advantage of the latest web application security features such as http/2 without any modification of http 1.1
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Forward Proxies
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Forward proxies are those proxies that sit between two networks, usually a private internal network and the public Internet.
Large service providers have also traditionally employed forward proxies as a bridge between their isolated network of subscribers and the public Internet, such as:
CompuServe and AOL in days gone by. These are often referred to as “mega-proxies” because they managed such high volumes of traffic
Forward proxies are generally HTTP (Web) proxies that provide a number of services but primarily focus on web content filtering and caching services.
These forward proxies often include authentication and authorization as a part of their product to provide more control over access to public content
Reverse Proxies
Is less well known, generally because we don’t use the term anymore to describe products used as such
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Reverse proxies are also generally focused on HTTP but in recent years have expanded to include a number of other protocols commonly used on the web such as:
Streaming audio (RTSP), file transfers (FTP), and generally any application protocol capable of being delivered via UDP or TCP
Half Proxies
Half-proxy is a description of the way in which a proxy, reverse or forward, handles connections.
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One describing a deployment configuration that affects the way connections
are handled and one that describes simply the difference between a first and subsequent connections.
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