Cisco Cisco Web Security Appliance S370 Guia Do Utilizador

The web proxy controls web traffic based on the policies that you create for groups of transaction requests.

Allow. The Web Proxy permits the connection without interruption. Allowed connections may not 
have been scanned by the DVS engine. 

Block. The Web Proxy does not permit the connection and instead displays an end user notification 
page explaining the reason for the block.

Redirect. The Web Proxy does not allow the connection to the originally requested destination 
server and instead connects to a different specified URL, see 

.

Applications

The Application Visibility and Control engine (AVC) engine is an Acceptable 
Use policy component that inspects Web traffic to gain deeper understanding and 
control of Web traffic used for applications. The appliance allows the Web Proxy 
to be configured to block or allow applications by Application Types, and by 
individual applications. You can also apply controls to particular application 
behaviors, such as file transfers, within a particular application. See 

 for configuration information.

Objects

Allows the Web Proxy to be configured to block file downloads based on file 
characteristics, such as file size and file type. An object is, generally, any item that 
can be individually selected, uploaded, downloaded and manipulated, such as:

Application: pdf, xml, zip, exe

Text: cmd, csv, html, javascript

Image: gif, jpeg, png, tiff

Video: mp4, Quicktime, avi, wmv

Audio: mp4, wav, webm, mpeg

Message: http, xml, rfc822, partial

x-world: wrl, wrz, xof, 3dmf

Object blocking does not inspect inside compressed files. 

Anti-Malware 
and Reputation

Web reputation filters allow for a web-based reputation score to be assigned to a 
URL to determine the probability of it containing URL-based malware. 
Anti-malware scanning identifies and stops web-based malware threats. 
Advanced Malware Protection identifies malware in downloaded files. 

The Anti-Malware and Reputation policy inherits global settings respective to 
each component. Within Security Services > Anti-Malware and Reputation, 
malware categories can be customized to monitor or block based on malware 
scanning verdicts and web reputation score thresholds can be customized. 
Malware categories can be further customized within a policy. There are also 
global settings for file reputation and analysis services. 

For more information, see 

 and