游戏mod是什么意思（mod_proxy Apache HTTP Server）

Directives

AllowCONNECT NoProxy <Proxy> ProxyBadHeader ProxyBlock ProxyDomain ProxyErrorOverride ProxyFtpDirCharset ProxyIOBufferSize <ProxyMatch> ProxyMaxForwards ProxyPass ProxyPassReverse ProxyPreserveHost ProxyReceiveBufferSize ProxyRemote ProxyRemoteMatch ProxyRequests ProxyTimeout ProxyVia

Topics

Forward and Reverse Proxies Basic Examples Controlling access to your proxy FTP Proxy Slow Startup Intranet Proxy Protocol Adjustments

See also

mod_cache mod_proxy_http mod_proxy_ftp mod_proxy_connect mod_ssl

Forward and Reverse Proxies

Apache can be configured in both a forward and

reverse proxy mode.

An ordinary forward proxy is an intermediate

server that sits between the client and the origin

server. In order to get content from the origin server,

the client sends a request to the proxy naming the origin server

as the target and the proxy then requests the content from the

origin server and returns it to the client. The client must be

specially configured to use the forward proxy to access other

sites.

A typical usage of a forward proxy is to provide Internet

access to internal clients that are otherwise restricted by a

firewall. The forward proxy can also use caching (as provided

by mod_cache) to reduce network usage.

The forward proxy is activated using the ProxyRequests directive. Because

forward proxys allow clients to access arbitrary sites through

your server and to hide their true origin, it is essential that

you secure your server so that only

authorized clients can access the proxy before activating a

forward proxy.

A reverse proxy, by contrast, appears to the

client just like an ordinary web server. No special

configuration on the client is necessary. The client makes

ordinary requests for content in the name-space of the reverse

proxy. The reverse proxy then decides where to send those

requests, and returns the content as if it was itself the

origin.

A typical usage of a reverse proxy is to provide Internet

users access to a server that is behind a firewall. Reverse

proxies can also be used to balance load among several back-end

servers, or to provide caching for a slower back-end server.

In addition, reverse proxies can be used simply to bring

several servers into the same URL space.

A reverse proxy is activated using the ProxyPass directive or the

[P] flag to the RewriteRule directive. It is

not

necessary to turn ProxyRequests on in order to

configure a reverse proxy.

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