Cisco Cisco Email Security Appliance C190 用户指南
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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Chapter 33 System Administration
Setting Up to Obtain Upgrades and Updates
Use a local server if your appliance does not have access to the internet, or if your organization restricts
access to mirror sites used for downloads. Downloading AsyncOS upgrades to each appliance from a
local server is generally faster than downloading from the Cisco IronPort servers.
access to mirror sites used for downloads. Downloading AsyncOS upgrades to each appliance from a
local server is generally faster than downloading from the Cisco IronPort servers.
Note
Cisco recommends using a local server only for AsyncOS upgrades. If you use a local update server for
security update images, the local server does not automatically receive security updates from Cisco
IronPort, so the appliances in your network may not always have the most current security services.
security update images, the local server does not automatically receive security updates from Cisco
IronPort, so the appliances in your network may not always have the most current security services.
Figure 33-2
Remote Update Method
Procedure
Step 1
Configure a local server to retrieve and serve the upgrade files.
Step 2
Download the upgrade files.
Step 3
Configure the appliance to use the local server using either the Security Services > Service Updates page
in the GUI or the
in the GUI or the
updateconfig
command in the CLI.
Step 4
Upgrade the appliance using either the System Administration > System Upgrade page or the
upgrade
command in the CLI.
Hardware and Software Requirements for Upgrading and Updating from a Local
Server
Server
For downloading AsyncOS upgrade and update files, you must have a system in your internal network
that has:
that has:
•
Internet access to the Cisco Systems update servers.
•
A web browser (see
Your IronPort Appliances
Web Server with HTTP
access to Internet
IronPort Systems
Update Servers
HTTP connection to Internet through firewall
local HTTP connections
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