D-Link NetDefend DFL-210

Table of Contents
Preface ...............................................................................................................13
1. NetDefendOS Overview ....................................................................................15
1.1. Features ................................................................................................15
1.2. NetDefendOS Architecture ......................................................................18
1.2.1. State-based Architecture ...............................................................18
1.2.2. NetDefendOS Building Blocks .......................................................18
1.2.3. Basic Packet Flow ........................................................................19
1.3. NetDefendOS State Engine Packet Flow .....................................................21
2. Management and Maintenance ............................................................................26
2.1. Managing NetDefendOS ..........................................................................26
2.1.1. Overview ...................................................................................26
2.1.2. The Default Administrator Account .................................................27
2.1.3. The Web Interface .......................................................................27
2.1.4. The CLI .....................................................................................31
2.1.5. CLI Scripts .................................................................................39
2.1.6. Secure Copy ...............................................................................42
2.1.7. The Console Boot Menu ...............................................................45
2.1.8. Management Advanced Settings .....................................................46
2.1.9. Working with Configurations .........................................................47
2.2. Events and Logging ................................................................................53
2.2.1. Overview ...................................................................................53
2.2.2. Log Messages .............................................................................53
2.2.3. Log Message Distribution ..............................................................54
2.2.4. Advanced Log Settings .................................................................56
2.3. RADIUS Accounting ..............................................................................58
2.3.1. Overview ...................................................................................58
2.3.2. RADIUS Accounting Messages ......................................................58
2.3.3. Interim Accounting Messages ........................................................60
2.3.4. Activating RADIUS Accounting .....................................................60
2.3.5. RADIUS Accounting Security ........................................................60
2.3.6. RADIUS Accounting and High Availability ......................................60
2.3.7. Handling Unresponsive Servers ......................................................61
2.3.8. Accounting and System Shutdowns .................................................61
2.3.9. Limitations with NAT ...................................................................61
2.3.10. RADIUS Advanced Settings ........................................................61
2.4. Hardware Monitoring ..............................................................................63
2.5. SNMP Monitoring ..................................................................................65
2.5.1. SNMP Advanced Settings .............................................................66
2.6. The pcapdump Command ........................................................................68
2.7. Maintenance ..........................................................................................71
2.7.1. Auto-Update Mechanism ...............................................................71
2.7.2. Creating Backup Files ...................................................................71
2.7.3. Restore to Factory Defaults ............................................................72
3. Fundamentals ...................................................................................................75
3.1. The Address Book ..................................................................................75
3.1.1. Overview ...................................................................................75
3.1.2. IP Addresses ...............................................................................75
3.1.3. Ethernet Addresses .......................................................................77
3.1.4. Address Groups ...........................................................................78
3.1.5. Auto-Generated Address Objects ....................................................78
3.1.6. Address Book Folders ...................................................................79
3.2. Services ................................................................................................80
3.2.1. Overview ...................................................................................80
3.2.2. TCP and UDP Based Services ........................................................81
3.2.3. ICMP Services ............................................................................83
3.2.4. Custom IP Protocol Services ..........................................................84
3.2.5. Service Groups ............................................................................85
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