Cisco Cisco Email Security Appliance C160 Mode D'Emploi

Internet access to the Cisco Systems update servers. 

A web browser (see 

For this release, if you need to configure a firewall setting to allow HTTP access to this address, you 
must configure it using the DNS name and not a specific IP address. 

For hosting AsyncOS update files, you must have a server in your internal network that has:

A web server — for example, Microsoft IIS (Internet Information Services) or the Apache open 
source server — which: 

supports the display of directory or filenames in excess of 24 characters

has directory browsing enabled

is configured for anonymous (no authentication) or basic (“simple”) authentication

contains at least 350MB of free disk space for each AsyncOS update image 

After setting up a local server, go to 

http://updates.ironport.com/fetch_manifest.html

 to 

download a ZIP file of an upgrade image. To download the image, enter your serial number (for a 
physical appliance) or a VLN (for a virtual appliance) and the version number of the Cisco appliance. 
You will then be presented with a list of available upgrades. Click on the upgrade version that you want 
to download, and unzip the ZIP file in the root directory on the local server while keeping the directory 
structure intact. To use the upgrade image, configure the appliance to use the local server on the Edit 
Update Settings page (or use 

updateconfig

 in the CLI).

The local server also hosts an XML file that limits the available AsyncOS upgrades for the Cisco 
appliances on your network to the downloaded upgrade image. This file is called the “manifest.” The 
manifest is located in the 

asyncos

 directory of the upgrade image ZIP file. After unzipping the ZIP file 

in the root directory of the local server, enter the full URL for the XML file, including the filename, on 
the Edit Update Settings page (or use 

updateconfig

 in the CLI).

For more information about remote upgrades, please see the Cisco Knowledge Base or contact your 
Cisco Support provider.

The following services require updates for maximum effectiveness: 

Feature Keys 

McAfee Anti-Virus definitions

PXE Engine 

Sophos Anti-Virus definitions

IronPort Anti-Spam rules

Outbreak Filters rules

Time zone rules