D-Link 800 - DFL 800 - Security Appliance, User Manual

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Table of Contents
Preface ...............................................................................................................12
1. NetDefendOS Overview ....................................................................................14
1.1. Features ................................................................................................14
1.2. NetDefendOS Architecture ......................................................................17
1.2.1. State-based Architecture ...............................................................17
1.2.2. NetDefendOS Building Blocks .......................................................17
1.2.3. Basic Packet Flow ........................................................................18
1.3. NetDefendOS State Engine Packet Flow .....................................................20
2. Management and Maintenance ............................................................................25
2.1. Managing NetDefendOS ..........................................................................25
2.1.1. Overview ...................................................................................25
2.1.2. The Default Administrator Account .................................................26
2.1.3. The Web Interface .......................................................................26
2.1.4. The CLI .....................................................................................30
2.1.5. CLI Scripts .................................................................................36
2.1.6. Secure Copy ...............................................................................39
2.1.7. The Console Boot Menu ...............................................................41
2.1.8. Management Advanced Settings .....................................................43
2.1.9. Working with Configurations .........................................................44
2.2. Events and Logging ................................................................................49
2.2.1. Overview ...................................................................................49
2.2.2. Event Messages ...........................................................................49
2.2.3. Event Message Distribution ...........................................................49
2.2.4. Advanced Log Settings .................................................................52
2.3. RADIUS Accounting ..............................................................................54
2.3.1. Overview ...................................................................................54
2.3.2. RADIUS Accounting Messages ......................................................54
2.3.3. Interim Accounting Messages ........................................................56
2.3.4. Activating RADIUS Accounting .....................................................56
2.3.5. RADIUS Accounting Security ........................................................56
2.3.6. RADIUS Accounting and High Availability ......................................56
2.3.7. Handling Unresponsive Servers ......................................................57
2.3.8. Accounting and System Shutdowns .................................................57
2.3.9. Limitations with NAT ...................................................................57
2.3.10. RADIUS Advanced Settings ........................................................57
2.4. SNMP Monitoring ..................................................................................59
2.4.1. SNMP Advanced Settings .............................................................60
2.5. The pcapdump Command ........................................................................62
2.6. Maintenance ..........................................................................................65
2.6.1. Auto-Update Mechanism ...............................................................65
2.6.2. Creating Backup Files ...................................................................65
2.6.3. Configuration Backup and Restore ..................................................66
2.6.4. Restore to Factory Defaults ............................................................67
3. Fundamentals ...................................................................................................70
3.1. The Address Book ..................................................................................70
3.1.1. Overview ...................................................................................70
3.1.2. IP Addresses ...............................................................................70
3.1.3. Ethernet Addresses .......................................................................72
3.1.4. Address Groups ...........................................................................73
3.1.5. Auto-Generated Address Objects ....................................................73
3.1.6. Address Book Folders ...................................................................74
3.2. Services ................................................................................................75
3.2.1. Overview ...................................................................................75
3.2.2. TCP and UDP Based Services ........................................................76
3.2.3. ICMP Services ............................................................................78
3.2.4. Custom IP Protocol Services ..........................................................79
3.3. Interfaces ..............................................................................................80
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