User Guide

Contents
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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Resetting to Factory Defaults 33-4
Displaying the Version Information for AsyncOS 33-5
Feature Keys 33-5
Adding and Managing Feature Keys 33-5
Automating Feature Key Download and Activation 33-6
Expired Feature Keys 33-7
Cisco Email Security Virtual Appliance License 33-7
Virtual Appliance License Expiration 33-7
Managing the Configuration File 33-7
Managing Configuration Files Using the GUI 33-8
CLI Commands for Configuration Files 33-12
Managing Disk Space 33-16
(Virtual Appliances Only) Increasing Available Disk Space 33-16
Allocating Disk Space Quotas 33-16
Managing Disk Space for the Miscellaneous Quota 33-17
Ensuring That You Receive Alerts About Disk Space 33-17
Disk Space and Centralized Management 33-17
Service Updates 33-17
Setting Up to Obtain Upgrades and Updates 33-18
Options for Distributing Upgrades and Updates 33-18
Configuring Your Network to Download Upgrades and Updates from the Cisco Servers 33-19
Configuring the Appliance for Upgrades and Updates in Strict Firewall Environments 33-19
Upgrading and Updating from a Local Server 33-19
Hardware and Software Requirements for Upgrading and Updating from a Local Server 33-20
Hosting an Upgrade Image on a Local Server 33-21
UpdatesThrough a Proxy Server 33-21
Configuring Server Settings for Downloading Upgrades and Updates 33-21
Configuring Automatic Updates 33-23
Configuring the Appliance to Verify the Validity of Updater Server Certificate 33-23
Configuring the Appliance to Trust Proxy Server Communication 33-25
Upgrading AsyncOS 33-25
About Upgrading Clustered Systems 33-26
About Batch Commands for Upgrade Procedures 33-26
Notifications of Available Upgrades 33-26
Preparing to Upgrade AsyncOS 33-26
Downloading and Installing the Upgrade 33-27
Enabling Remote Power Management 33-29
Reverting to a Previous Version of AsyncOS 33-30
Reversion Impact 33-30