Cisco Cisco Web Security Appliance S670 ユーザーガイド

By itself, the Web Proxy can intercept web requests that use HTTP (including FTP over HTTP) and 
HTTPS. Additional proxy modules are available to enhance protocol management:

FTP Proxy. The FTP Proxy allows the interception of native FTP traffic (rather than just FTP traffic
that has been encoded within HTTP).

HTTPS Proxy. The HTTPS proxy supports the decryption of HTTPS traffic and allows the web
proxy to pass unencrypted HTTPS requests on to policies for content analysis.

When in transparent mode, the Web Proxy drops all transparently redirected HTTPS requests if 
the HTTPS proxy is not enabled. No log entries are created for dropped transparently redirected 
HTTPS requests.

SOCKS Proxy. The SOCKS proxy allows the interception of SOCKS traffic.

Each of these additional proxies requires the Web Proxy in order to function.You cannot enable them if 
you disable the Web Proxy.

The Web proxy is enabled by default. All other proxies are disabled by default.

Enable the web proxy.

Choose Security Services > Web Proxy.

Click Edit Settings.

Configure the basic web proxy settings as required.

HTTP Ports to Proxy

The ports that the web Proxy will listen on for HTTP connections 

HTTP CONNECT Ports The ports applications are allowed to use for tunneling outbound traffic 

over HTTP.

Caching

Specifies whether to enable or disable Web Proxy caching. 

The web proxy caches data to increase performance.