Cisco Cisco Web Security Appliance S160 User Guide

In the Notification Page URL field, enter the URL to which you want to redirect blocked websites.

(Optional) Click Preview Custom URL link.

Submit and Commit Changes.

You can configure the Web Security appliance to inform users that it is filtering and monitoring their 
web activity. When configured the appliance displays an end-user acknowledgment page for every user 
accessing the web using HTTP or HTTPS. It displays the end-user acknowledgment page when a user 
tries to access a website for the first time, or after a configured time interval. 

The Web Proxy tracks users by username if authentication has made a username available. If no user 
name is available, you can choose how to track users, either by IP address or web browser session cookie.

Native FTP transactions are exempt from the end-user acknowledgment page.

The table describes the settings you can configure when you enable the end-user acknowledgment page.

The Time Between Acknowledgments determines how often the Web Proxy 
displays the end-user acknowledgment page for each user. This setting applies 
to users tracked by username and users tracked by IP address or session cookie. 
You can specify any value from 30 to 2678400 seconds (one month). Default is 
one day (86400 seconds). 

When the Time Between Acknowledgments changes and is committed, the Web 
Proxy uses the new value even for users who have already acknowledged the 
Web Proxy. 

The Inactivity Timeout determines how long a user tracked and acknowledged 
by IP address or session cookie (unauthenticated users only) can be idle before 
the user is no longer considered acknowledged. You can specify any value from 
30 to 2678400 seconds (one month). Default is four hours (14400 seconds).