Cisco Cisco Web Security Appliance S170 사용자 가이드

This chapter contains the following topics: 

The Web Security appliance is typically installed as an additional layer in the network between clients 
and the Internet. Depending on how you deploy the appliance, you may need a Layer 4 (L4) switch or a 
WCCP router to direct client traffic to the appliance. 

These deployment options are available on the Web Security appliance:

Secure web proxy. The appliance web proxy service monitors and scans web traffic for malicious 
content. When you enable the web proxy, you can configure it to be in transparent or explicit forward 
mode.

L4 Traffic Monitor. The L4 Traffic Monitor detects and blocks rogue traffic across all ports and IP 
addresses. The L4 Traffic Monitor listens to network traffic that comes in over all ports and IP 
addresses on the appliance and matches domain names and IP addresses against entries in its own 
database tables to determine whether to allow outgoing traffic.

Cloud Web Security Connector. The Cloud Web Security Connector connects the Web Security 
Appliance to Cisco Cloud Web Security, redirecting web traffic to the Cloud Web Security tower. 
When deployed as a Cloud Web Security Connector, the standard web proxy services and L4 Traffic 
Monitor services are not available. Information about deploying as a Cloud Web Security Connector 
is in 

When deployed in standard mode (not as a Cloud Web Security Connector), by default, both the L4 
Traffic Monitor and Web Proxy are enabled in the System Setup Wizard. If you need to disable one or 
both of these features, you can do so after initial setup from the web interface.