Cisco Cisco Web Security Appliance S160 Guía Del Usuario
C H A P T E R
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Cisco IronPort AsyncOS 7.5 for Web User Guide
6
Web Proxy Services
This chapter contains the following information:
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About Web Proxy Services
A web proxy is a computer system or software that handles World Wide Web requests of clients by
making requests of other servers on the web. The Web Security appliance can act as a web proxy if you
enable the Web Proxy feature.
making requests of other servers on the web. The Web Security appliance can act as a web proxy if you
enable the Web Proxy feature.
The Web Proxy service monitors and controls traffic that originates from clients on the internal network.
Typically, the Web Proxy-enabled Web Security appliance is deployed between clients and the firewall
where it intercepts requests for content from clients to servers.
Typically, the Web Proxy-enabled Web Security appliance is deployed between clients and the firewall
where it intercepts requests for content from clients to servers.
You can configure the Web Proxy as one of the following types:
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Transparent Proxy. When the appliance is configured as a transparent proxy, clients are unaware
of the Web Proxy. Client applications, such as web browsers, do not have to be configured to
accommodate the appliance. You might want to configure the appliance as a transparent proxy
because it eliminates the possibility of users reconfiguring their web browsers to bypass the
appliance without knowledge of the administrator. To configure the appliance as a transparent proxy,
you must connect it to an Layer 4 switch or a WCCP router.
of the Web Proxy. Client applications, such as web browsers, do not have to be configured to
accommodate the appliance. You might want to configure the appliance as a transparent proxy
because it eliminates the possibility of users reconfiguring their web browsers to bypass the
appliance without knowledge of the administrator. To configure the appliance as a transparent proxy,
you must connect it to an Layer 4 switch or a WCCP router.
For information about how to configure the appliance when you configure the proxy in transparent
mode, see
mode, see
.