Cisco Cisco Web Security Appliance S160 User Guide

Layer-4 Switch or 
No Device

Specifies that the Web Security appliance is connected to a layer 4 switch for 
transparent redirection, or that no transparent redirection device is used and clients 
will explicitly forward requests to the appliance.

WCCP v2 Router

Specifies that the Web Security appliance is connected to a version 2 WCCP 
capable router.

If you connect the appliance to a version 2 WCCP router, you must create at least 
one WCCP service. You can enable the standard service on this screen, or after the 
System Setup Wizard is finished, where you can also create multiple dynamic 
services.

When you enable the standard service, you can also enable router security and 
enter a password. The password used here must be used all appliances and WCCP 
routers within the same service group. 

A standard service type (also known as the “web-cache” service) is assigned a 
fixed ID of zero, a fixed redirection method (by destination port), and a fixed 
destination port of 80.

A dynamic service type allows you to define a custom ID, port numbers, and 
redirection and load balancing options.

Administrator 
Password

The password used to access the Web Security appliance for administrative 
purposes.

Email System Alerts 
To

The email address to which the appliance sends systems alerts. 

Send Email via 
SMTP Relay Host 
(optional)

The address and port for an SMTP relay host that AsyncOS can use to send 
system generated email messages.

If no SMTP relay host is defined, AsyncOS uses the mail servers listed in the 
MX record.