Cisco Cisco Web Security Appliance S170 사용자 가이드

http://server_address[.domain][:port][/filename] | http://WSAHostname[/filename]

where WSAHostname is the hostname value configured when hosting the PAC file on a Web Security 
appliance. Otherwise the URL format will depend on the storage location and, in some cases, on the client.

.

Create a PAC file called 

wpad.dat

 and publish it to a web server or Web Security appliance (the file must 

be placed in a web server’s root folder if you intend using WPAD with DNS).

Configure the web server to set up 

.dat

 files with the following MIME type:

application/x-ns-proxy-autoconfig

 

A Web Security appliance does this for you automatically.

To support DNS lookup, create an internally resolvable DNS name beginning with ‘

wpad

’ (for example, 

wpad.example.com

) and associate it with the IP address of the server hosting the 

wpad.dat

 file.

To support DHCP lookup, configure your DHCP server’s option 252 with the url of the wpad.dat file 
location (for example: “

http://wpad.example.com/wpad.dat

”). The URL can use any valid host 

address, including an IP address, and does not require a specific DNS entry.

.

.

The web proxy can intercept two types of FTP requests:

Native FTP. Native FTP requests are generated by dedicated FTP clients (or by browsers using 
built-in FTP clients). Requires the FTP proxy.

FTP over HTTP. Browsers sometimes encode FTP requests inside HTTP requests, rather than using 
native FTP. Does not require the FTP proxy.