Cisco Cisco Email Security Appliance C160

URL Filtering 
Enhancement 

You can now configure the appliance not to replace the URLs within 
HREF tags with secure proxy URLs. However, if an end user clicks on 
these URLs, the end user will be redirected to the secure proxy. 

You can configure this option using the 

websecurityadvancedconfig

 

command in CLI (

websecurityadvancedconfig

 > 

Do you want to 

rewrite all URLs with secure proxy URLs? [Y]> n

). 

Message Filter Rule to 
Detect Malformed MIME 
Headers

You can now take actions on messages with malformed MIME headers 
using the new message filter rule: “

malformed-header

.” The following 

example shows how to quarantine all the messages with malformed MIME 
headers:

quarantine_malformed_headers: if (malformed-header) 

{

quarantine("Policy");

}

Option to Send Potentially 
Malicious File Types for 
File Analysis

Cisco periodically checks for potentially malicious file types to prevent 
zero day threats. If new threats are identified, details of such file types are 
sent to your appliance through updater servers. If you enable this 
functionality, your appliance will send such file types for analysis in 
addition to the file types you have selected.

Select the Other potentially malicious file types option on the File 
Reputation and Analysis Settings page (Security Services > File 
Reputation and Analysis > Edit Global Settings > File Analysis 
section) to enable this functionality.

For information about the new file types that are analyzed, see File 
Criteria for Advanced Malware Protection Services for Cisco Content 
Security Products, available from 

In order to access this document, you must have a Cisco customer 
account with a support contract. To register, visit 

.

Content Scanning Engine 
Update

The content scanning engine is updated in this release. Going forward, all 
the content scanning engine updates are automatically available through 
the update server. 

Image Analysis Scanning 
Engine Update

The image analysis scanning engine is updated in this release.