D-Link NetDefendOS User Manual page 11

List of Figures
1.1. Packet Flow Schematic Part I ............................................................................ 28
1.2. Packet Flow Schematic Part II ........................................................................... 29
1.3. Packet Flow Schematic Part III .......................................................................... 30
1.4. Expanded Apply Rules Logic ............................................................................. 31
2.1. Management Workstation Connection .............................................................. 42
3.1. Path MTU Discovery Processing ...................................................................... 175
3.2. Link Aggregation ......................................................................................... 192
3.3. VLAN Connections ....................................................................................... 197
3.4. A Service VLAN Use Case ............................................................................... 200
3.5. An Example of GRE Usage .............................................................................. 207
3.6. IP6in4 Tunnel Usage ..................................................................................... 210
3.7. Acting as a 6in4 Tunnel Server ........................................................................ 212
3.8. A Use Case for Loopback Interfaces ................................................................. 215
3.9. Setting Up Loopback Interfaces with Routing Tables .......................................... 216
3.10. Components of Loopback Interface Setup ...................................................... 217
3.11. An ARP Publish Ethernet Frame .................................................................... 225
3.12. Simplified NetDefendOS Traffic Flow ............................................................. 231
3.13. Certificate Validation Components ................................................................ 278
4.1. A Typical Routing Scenario ............................................................................ 287
4.2. Using Local IP Address with an Unbound Network .............................................. 289
4.3. A Route Failover Scenario for ISP Access .......................................................... 296
4.4. A Proxy ARP Example .................................................................................... 303
4.5. The RLB Round Robin Algorithm ..................................................................... 317
4.6. The RLB Spillover Algorithm ........................................................................... 318
4.7. A Route Load Balancing Scenario .................................................................... 320
4.8. Virtual Routing ............................................................................................ 324
4.9. The Disadvantage of Routing Rules ................................................................. 325
4.10. The Advantage of Virtual Routing ................................................................. 326
4.11. A Simple OSPF Scenario ............................................................................... 332
4.12. OSPF Providing Route Redundancy ............................................................... 333
4.13. Virtual Links Connecting Areas ..................................................................... 337
4.14. Virtual Links with Partitioned Backbone ......................................................... 338
4.15. NetDefendOS OSPF Objects ......................................................................... 339
4.16. Dynamic Routing Rule Objects ..................................................................... 347
4.17. An OSPF Example ....................................................................................... 353
4.18. Multicast Forwarding - No Address Translation ................................................ 363
4.19. Multicast Forwarding - Address Translation .................................................... 367
4.20. Multicast Snoop Mode ................................................................................ 369
4.21. Multicast Proxy Mode .................................................................................. 369
4.22. Tunneling Multicast using GRE ..................................................................... 377
4.23. Non-transparent Mode Internet Access .......................................................... 384
4.24. Transparent Mode Internet Access ................................................................ 385
4.25. Transparent Mode Use Case ......................................................................... 386
4.26. An Example BPDU Relaying Scenario ............................................................. 389
5.1. DHCP Server Objects .................................................................................... 401
5.2. DHCP Relay with Proxy ARP ........................................................................... 405
6.1. Deploying an ALG ........................................................................................ 426
6.2. HTTP ALG Processing Order ........................................................................... 431
6.3. FTP ALG Hybrid Mode ................................................................................... 437
6.4. SMTP ALG Usage .......................................................................................... 449
6.5. SMTP ALG Processing Order ........................................................................... 452
6.6. POP3 ALG Usage .......................................................................................... 458
6.7. PPTP ALG Usage ........................................................................................... 462
6.8. TLS Termination ........................................................................................... 501
6.9. Web Content Filtering Flow ........................................................................... 509
6.10. Anti-Spam Filtering ..................................................................................... 540
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