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E-2
Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1
OL-24002-01
Appendix E Troubleshooting
Preventive Maintenance
•
Creating the Service Account, page E-5
Understanding Preventive Maintenance
The following actions will help you maintain your sensor:
•
Back up a good configuration. If your current configuration becomes unusable, you can replace it
with the backup version.
•
Save your backup configuration to a remote system.
•
Always back up your configuration before you do a manual upgrade. If you have auto upgrades
configured, make sure you do periodic backups.
•
Create a service account. A service account is needed for special debug situations directed by TAC.
Caution
You should carefully consider whether you want to create a service account. The service account
provides shell access to the system, which makes the system vulnerable. Analyze your situation to decide
if you want a service account existing on the system.
For More Information
•
For the procedure for backing up a configuration file, see Creating and Using a Backup
Configuration File, page E-2.
•
For the procedure for using a remote server to copy and restore the a configuration file, see Backing
Up and Restoring the Configuration File Using a Remote Server, page E-3.
•
For more information about the service account, see Creating the Service Account, page E-5.
Creating and Using a Backup Configuration File
To protect your configuration, you can back up the current configuration and then display it to confirm
that is the configuration you want to save. If you need to restore this configuration, you can merge the
backup configuration file with the current configuration or overwrite the current configuration file with
the backup configuration file.
To back up your current configuration, follow these steps:
Step 1
Log in to the CLI using an account with administrator privileges.
Step 2
Save the current configuration. The current configuration is saved in a backup file.
sensor# copy current-config backup-config
Step 3
Display the backup configuration file. The backup configuration file is displayed.
sensor# more backup-config
Step 4
You can either merge the backup configuration with the current configuration, or you can overwrite the
current configuration:
•
Merge the backup configuration into the current configuration.
sensor# copy backup-config current-config
•
Overwrite the current configuration with the backup configuration.