Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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Cisco AsyncOS 9.1 for Email 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.

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.

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

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

For downloading AsyncOS upgrade and update files, you must have a system in your internal network
that has:

•

Internet access to the Cisco Systems update servers.

•

A web browser (see

Browser Requirements, page 2-1

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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