Cisco Cisco Web Security Appliance S660 Guida Utente

For some groups of MIME types, blocking one type blocks all MIME types in the group. For 
example, blocking application/x-java-applet blocks all java MIME types, such as 
application/java and application/javascript. 

File name. You can block files with specified names. You can use text as a literal string or a regular 
expression for specifying file names to block. 

Only enter file names with 8-bit ASCII characters. The Web Proxy only matches file names with 
8-bit ASCII characters.

The Web Security appliance can integrate with multiple external DLP servers from the same vendor by 
defining multiple DLP servers in the appliance. You can define the load-balancing technique the Web 
Proxy uses when contacting the DLP systems. This is useful when you define multiple DLP systems. See 

 for information about specifying the protocols used to secure 

communications with external DLP servers.

Verify the external DLP server does not send the Web Proxy modified content. AsyncOS for Web only 
supports the ability to block or allow upload requests. It does not support uploading content modified by 
an external DLP server. 

Choose Network > External DLP Servers.

Click Edit Settings.

Protocol for External 
DLP Servers

Choose either:

ICAP – DLP client/server ICAP communications are not encrypted.

Secure ICAP – DLP client/server ICAP communications are via an 
encrypted tunnel. Additional related options appear.