Cisco Cisco Web Security Appliance S170 Guida Utente

When browsers are configured to use a PAC file on the appliance, the URL should 
include the PAC file name. If the URL does not specify the PAC file name, by 
default, the appliance uses default.pac if it exists and returns an error if it does not. 
Or, you can configure the default PAC file to use for different hostnames or 
domains on the network.

For more information about PAC files, see 

When you configure a browser to use a PAC file, you can specify the exact 
location of the file using a URL. When the PAC file is hosted on the Web Security 
appliance, you can specify the URL using any of the formats in 

http://hostname.domain:port/filename

The PAC file filename is served if it 
exists; otherwise an error is returned.

This assumes port is a configured port 
on the appliance, and that hostname is 
the hostname of the appliance network 
interface configured for PAC file 
hosting.

http://hostname.domain:port/

The PAC file default.pac is served if it 
exists; otherwise an error is returned.

This assumes port is a configured port 
on the appliance, and that hostname is 
the hostname of the appliance network 
interface configured for PAC file 
hosting.