Table of Contents
Preface
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12
1. Product Overview
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14
1.1. About D-Link NetDefendOS
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14
1.2. NetDefendOS Architecture
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16
1.2.1. State-based Architecture
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16
1.2.2. NetDefendOS Building Blocks
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16
1.2.3. Basic Packet Flow
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17
1.3. NetDefendOS State Engine Packet Flow
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19
2. Management and Maintenance
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23
2.1. Managing NetDefendOS
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23
2.1.1. Overview
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23
2.1.2. Default Administrator Accounts
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23
2.1.3. The CLI
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24
2.1.4. The WebUI
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26
2.1.5. Working with Configurations
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29
2.2. Events and Logging
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35
2.2.1. Overview
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35
2.2.2. Event Messages
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35
2.2.3. Event Message Distribution
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35
2.3. RADIUS Accounting
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39
2.3.1. Overview
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39
2.3.2. RADIUS Accounting Messages
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39
2.3.3. Interim Accounting Messages
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41
2.3.4. Activating RADIUS Accounting
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41
2.3.5. RADIUS Accounting Security
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41
2.3.6. RADIUS Accounting and High Availability
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41
2.3.7. Handling Unresponsive Servers
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42
2.3.8. Accounting and System Shutdowns
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42
2.3.9. Limitations with NAT
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42
2.4. Monitoring
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43
2.4.1. SNMP Monitoring
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43
2.5. Maintenance
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45
2.5.1. Auto-Update Mechanism
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45
2.5.2. Configuration Backup and Restore
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45
2.5.3. Resetting to Factory Defaults
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45
3. Fundamentals
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48
3.1. The Address Book
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48
3.1.1. Overview
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48
3.1.2. IP Addresses
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48
3.1.3. Ethernet Addresses
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50
3.1.4. Address Groups
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51
3.1.5. Auto-Generated Address Objects
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51
3.2. Services
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52
3.2.1. Overview
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52
3.2.2. TCP and UDP Based Services
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53
3.2.3. ICMP Services
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55
3.2.4. Custom IP Protocol Services
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55
3.3. Interfaces
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57
3.3.1. Overview
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57
3.3.2. Ethernet
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58
3.3.3. VLAN
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60
3.3.4. PPPoE
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61
3.3.5. GRE Tunnels
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63
3.3.6. Interface Groups
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66
3.4. ARP
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68
3.4.1. Overview
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68
3.4.2. ARP in NetDefendOS
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68
4