Apache Technologies 14 Bedienungsanleitung PDF herunterladen (Seite 28)

28 Chapter 2 Managing Web Technologies

Setting Up Proxy Caching

A proxy lets users check a local server for frequently used files. You can use a proxy to

speed up response times and reduce network traffic. The proxy stores recently accessed

files in a cache on your web server. Browsers on your network check the cache before

retrieving files from more distant servers.

To take advantage of this feature, client computers must specify your web server as

their proxy server in their browser preferences.

If you want to set up a web proxy, make sure you create and enable a website for the

proxy. You may wish to disable logging on the proxy site, or configure the site to record

its access log in a separate file from your other sites’ access logs. The site does not have

to be on port 80, but setting up web clients is easier if it is because browsers use port

80 by default.

Important: If you don’t restrict access to your server as a proxy, anyone may have

access, which can be a security risk. This is particularly true is your server hosts both

internal and external websites.

To set up a proxy:

1 In Server Admin, click Web for the server you want.

2 Click Settings in the button bar.

3 In the Proxy pane, click Enable Proxy.

4 Click Control Access To Proxy to limit access and type the domain name to allow.

Generally, if you want to limit who can use your web server as a proxy, limit access of a

specific domain. Users within that domain will have access.

5 Set the maximum cache size.

When the cache reaches this size, the oldest files are deleted from the cache folder.

6 Type the pathname for the cache folder in the “Cache folder” field.

You can also click the Browse button and browse for the folder you want to use.

If you are administering a remote server, file service must be running on the remote

server to use the Browse button.

If you change the folder location from the default, you will have to select the new

folder in the Finder, choose File > Get Info, and change the owner and group to www.

7 Click the Add button to add a host you want to block and type its URL.

Continue to add names of hosts to block as necessary.

8 Click Save.

Note: If proxy is enabled, any site on the server can be used as the proxy.

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Apache Technologies 14 Bedienungsanleitung Seite 28