Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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Cisco AsyncOS 8.5.5 for Email Security User Guide
Chapter 32 System Administration
Setting Up to Obtain Upgrades and Updates
Setting Up to Obtain Upgrades and Updates
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Options for Distributing Upgrades and Updates
There are several ways to distribute AsyncOS upgrade and update files to your appliances:
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Each appliance can download the files directly from the Cisco update servers. This is the default
method.
method.
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You can download the files from Cisco once, and then distribute them to your appliances from a
server within your network. See
server within your network. See
To choose and configure a method, see
.
Configuring Your Network to Download Upgrades and Updates from the Cisco
Servers
Servers
The appliance connect directly to the Cisco update servers to find and download upgrades and updates:
Figure 32-1
Streaming Update Method
Cisco update servers use dynamic IP addresses. If you have strict firewall policies, you may need to
configure a static location instead. For more information, see
configure a static location instead. For more information, see
.
Create a firewall rule to allow downloading of upgrades from Cisco update servers on ports 80 and 443.
Your IronPort Appliance
HTTP connection
through firewall
IronPort Systems
Update Servers
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