Maintenance; Auto-Update Mechanism; Configuration Backup And Restore; Resetting To Factory Defaults - D-Link NetDefend DFL-210 User Manual

2.5. Maintenance

2.5. Maintenance

2.5.1. Auto-Update Mechanism

A number of the NetDefendOS security features rely on external servers for automatic updates and
content filtering. The Intrusion Prevention and Detection system and Anti-Virus modules require
access to updated signature databases in order to provide protection against the latest threats.
To facilitate the Auto-Update feature D-Link maintains a global infrastructure of servers providing
update services for D-Link Firewalls. To ensure availability and low response times, NetDefendOS
employs a mechanism for automatically selecting the most appropriate server to supply updates.
For more details on these features see the following sections:
• Section 6.5, "Intrusion Detection and Prevention"
• Section 6.4, "Anti-Virus Scanning"
• Section 6.3, "Web Content Filtering"
• Appendix A, Subscribing to Security Updates

2.5.2. Configuration Backup and Restore

The NetDefendOS configuration of a D-Link Firewall can be backed up or restored on demand. This
could, for instance, be used to recall the "last known good" configuration when experimenting with
different configuration setups.
Example 2.14. Configuration Backup and Restore
Web Interface
To create a backup of the currently running configuration:
1. Go to Tools > Backup
2. Download configuration, select a name and begin backup
To restore a configuration backup:
1. Go to Tools > Backup
2. In Restore unit's configuration browse and locate the desired backup
3. Click Upload configuration and then choose to activate that configuration

2.5.3. Resetting to Factory Defaults

A restore to factory defaults can be applied so that it is possible to return to the original hardware
state that existed when the D-Link Firewall was shipped by D-Link. When a restore is applied all
data such as the IDP and Ant-Virus databases are lost and must be reloaded.
Note
Backups include only static information in the firewall configuration. Dynamic
information such as the DHCP server lease database will not be backed up.
Chapter 2. Management and Maintenance
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