D-Link DFL-260E

Table of Contents
Preface ...............................................................................................................15
1. NetDefendOS Overview ....................................................................................17
1.1. Features ................................................................................................17
1.2. NetDefendOS Architecture ......................................................................20
1.2.1. State-based Architecture ...............................................................20
1.2.2. NetDefendOS Building Blocks .......................................................20
1.2.3. Basic Packet Flow ........................................................................21
1.3. NetDefendOS State Engine Packet Flow .....................................................24
2. Management and Maintenance ............................................................................29
2.1. Managing NetDefendOS ..........................................................................29
2.1.1. Overview ...................................................................................29
2.1.2. The Default Administrator Account .................................................30
2.1.3. The Web Interface .......................................................................30
2.1.4. The CLI .....................................................................................36
2.1.5. CLI Scripts .................................................................................44
2.1.6. Secure Copy ...............................................................................48
2.1.7. The Console Boot Menu ...............................................................50
2.1.8. Management Advanced Settings .....................................................52
2.1.9. Working with Configurations .........................................................53
2.2. Events and Logging ................................................................................59
2.2.1. Overview ...................................................................................59
2.2.2. Log Messages .............................................................................59
2.2.3. Creating Log Receivers .................................................................60
2.2.4. Logging to MemoryLogReceiver ....................................................60
2.2.5. Logging to Syslog Hosts ...............................................................60
2.2.6. Severity Filter and Message Exceptions ...........................................62
2.2.7. SNMP Traps ...............................................................................62
2.2.8. Advanced Log Settings .................................................................64
2.3. RADIUS Accounting ..............................................................................65
2.3.1. Overview ...................................................................................65
2.3.2. RADIUS Accounting Messages ......................................................65
2.3.3. Interim Accounting Messages ........................................................67
2.3.4. Activating RADIUS Accounting .....................................................67
2.3.5. RADIUS Accounting Security ........................................................68
2.3.6. RADIUS Accounting and High Availability ......................................68
2.3.7. Handling Unresponsive RADIUS Servers .........................................68
2.3.8. Accounting and System Shutdowns .................................................69
2.3.9. Limitations with NAT ...................................................................69
2.3.10. RADIUS Advanced Settings ........................................................69
2.4. Monitoring ............................................................................................71
2.4.1. The Link Monitor ........................................................................71
2.4.2. SNMP Monitoring .......................................................................73
2.4.3. Hardware Monitoring ...................................................................76
2.4.4. Memory Monitoring Settings .........................................................78
2.5. The pcapdump Command ........................................................................80
2.6. Maintenance ..........................................................................................83
2.6.1. Auto-Update Mechanism ...............................................................83
2.6.2. Backing Up Configurations ...........................................................83
2.6.3. Restore to Factory Defaults ............................................................85
3. Fundamentals ...................................................................................................88
3.1. The Address Book ..................................................................................88
3.1.1. Overview ...................................................................................88
3.1.2. IP Addresses ...............................................................................88
3.1.3. Ethernet Addresses .......................................................................90
3.1.4. Address Groups ...........................................................................91
3.1.5. Auto-Generated Address Objects ....................................................92
3.1.6. Address Book Folders ...................................................................92
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