Cisco Cisco Email Security Appliance C160 Mode D'Emploi

Programs, documents or email messages that carry a virus often have distinctive features. They might 
attempt unprompted modification of files, invoke mail clients, or use other means to replicate 
themselves. The engine analyzes the program code to detect these kinds of computer instructions. The 
engine also searches for legitimate non-virus-like behavior, such as prompting the user before taking 
action, and thereby avoids raising false alarms.

By using these techniques, the engine can detect many new viruses.

When a virus has been detected, McAfee can repair (disinfect) the file. McAfee can usually repair any 
file in which a virus has been found, after which the file can be used without risk. The precise action 
taken depends on the virus. 

Occasionally, there can be limitations when it comes to disinfecting files because it is not always 
possible to return a file to its original state. Some viruses overwrite part of the executable program which 
cannot be reinstated. In this instance, you define how to handle messages with attachments that could 
not be repaired. You configure these settings on a per-recipient basis using the Email Security Feature: 
the Mail Policies > Incoming or Outgoing Mail Policies pages (GUI) or the 

policyconfig -> antivirus

 

command (CLI). For more information on configuring these settings, see 

Enable anti-virus scanning on the Email 
Security appliance.

Define the groups of users whose messages you 
want to scan for viruses.

(Optional) Configure how you want the virus 
quarantine to handle messages.

Determine how you want the appliance to 
handle messages with viruses.

Configure the anti-virus scanning rules for the 
user groups you defined.

 

(Optional) Send an email message to test the 
configuration.