Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

The Email Security appliance connects to the Cisco Web Security Services either directly or through a 
web proxy, using the port specified for URL filtering services in 

Communication is over HTTPS with mutual certificate authentication. Certificates are updated 
automatically (see 

.) For additional information about required certificates, 

see the Release Notes available from the location specified in 

. 

If an HTTP or HTTPS proxy has been configured on the Security Services > Service Updates page, the 
Email Security appliance will use it when communicating with Cisco Web Security Services. For more 
information about using a proxy server, see 

. 

Certificates are not saved with a configuration file. 

AsyncOS is designed to automatically deploy and update the certificates needed for communications 
with cloud services used for URL filtering features. However, if for any reason the system is unable to 
update these certificates, you will receive an alert that requires action from you. 

Ensure that the appliance is configured to send you these alerts (System type, Warning severity). For 
instructions, see 

. 

If you receive an alert about an invalid certificate, contact Cisco TAC, which can provide the required 
replacement certificate. For instructions to use the replacement certificate, see 

The web interaction tracking feature provides information about the end users who clicked on rewritten 
URLs and the action (allowed, blocked, or unknown) associated with each user click. Once you enable 
this feature, you can use the Web Interaction Tracking report to view information such as top malicious 
URLs clicked, top users who clicked on malicious URLs, and so on. For more information about the Web 
Interaction Tracking report, see 

Web Interaction Tracking data is provided by a cloud-based Cisco Aggregator Server. 

Depending on your requirements, you can enable web interaction tracking on one of the global settings 
pages: