Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

The McAfee Anti-Virus and IronPort AsyncOS update servers use dynamic IP 
addresses. If you have strict firewall policies, you may need to configure a static 
location for McAfee anti-virus updates and AsyncOS upgrades. If you determine 
that your firewall settings require a static IP address for updates, follow 
instructions below for editing the update settings and contact IronPort Customer 
support to obtain the required URL addresses.

To edit the update settings for your IronPort appliance, click the Edit Update 
Settings button. You can configure the following types of settings: Update 
Servers (images), Update Servers (list), Automatic Updates, Interface, and Proxy 
Servers. See 

 for more details on the update settings.