9.6.1. Overview
.................................................................................
466
9.6.2. Configuring SSL VPN in NetDefendOS
.........................................
467
9.6.3. Installing the SSL VPN Client
......................................................
469
9.6.4. Setup Example
..........................................................................
472
9.7. CA Server Access
................................................................................
474
9.8. VPN Troubleshooting
...........................................................................
477
9.8.1. General Troubleshooting
.............................................................
477
9.8.2. Troubleshooting Certificates
........................................................
478
9.8.3. IPsec Troubleshooting Commands
................................................
478
9.8.4. Management Interface Failure with VPN
........................................
479
9.8.5. Specific Error Messages
..............................................................
479
9.8.6. Specific Symptoms
....................................................................
482
10. Traffic Management
......................................................................................
485
10.1. Traffic Shaping
..................................................................................
485
10.1.1. Overview
................................................................................
485
10.1.2. Traffic Shaping in NetDefendOS
.................................................
486
10.1.3. Simple Bandwidth Limiting
.......................................................
488
10.1.4. Limiting Bandwidth in Both Directions
........................................
489
10.1.5. Creating Differentiated Limits Using Chains
.................................
490
10.1.6. Precedences
............................................................................
492
10.1.7. Pipe Groups
............................................................................
496
10.1.8. Traffic Shaping Recommendations
..............................................
499
10.1.9. A Summary of Traffic Shaping
...................................................
500
10.1.10. More Pipe Examples
...............................................................
501
10.2. IDP Traffic Shaping
............................................................................
506
10.2.1. Overview
................................................................................
506
10.2.2. Setting Up IDP Traffic Shaping
..................................................
506
10.2.3. Processing Flow
.......................................................................
507
10.2.4. The Importance of Specifying a Network
......................................
507
10.2.5. A P2P Scenario
........................................................................
508
10.2.6. Viewing Traffic Shaping Objects
................................................
509
10.2.7. Guaranteeing Instead of Limiting Bandwidth
.................................
510
10.2.8. Logging
.................................................................................
510
10.3. Threshold Rules
.................................................................................
511
10.4. Server Load Balancing
........................................................................
514
10.4.1. Overview
................................................................................
514
10.4.2. SLB Distribution Algorithms
......................................................
515
10.4.3. Selecting Stickiness
..................................................................
516
10.4.4. SLB Algorithms and Stickiness
...................................................
517
10.4.5. Server Health Monitoring
..........................................................
518
10.4.6. Setting Up
SLB_SAT
Rules
........................................................
519
11. High Availability
..........................................................................................
523
11.1. Overview
..........................................................................................
523
11.2. HA Mechanisms
.................................................................................
525
11.3. Setting Up HA
...................................................................................
528
11.3.1. HA Hardware Setup
.................................................................
528
11.3.2. NetDefendOS Manual HA Setup
.................................................
529
11.3.3. Verifying the Cluster Functions
..................................................
530
11.3.4. Unique Shared Mac Addresses
...................................................
531
11.4. HA Issues
.........................................................................................
532
11.5. Upgrading an HA Cluster
.....................................................................
534
11.6. Link Monitoring and HA
......................................................................
536
11.7. HA Advanced Settings
........................................................................
537
12. ZoneDefense
................................................................................................
539
12.1. Overview
..........................................................................................
539
12.2. ZoneDefense Switches
.........................................................................
540
12.3. ZoneDefense Operation
.......................................................................
541
12.3.1. SNMP
....................................................................................
541
12.3.2. Threshold Rules
.......................................................................
541
12.3.3. Manual Blocking and Exclude Lists
.............................................
541
12.3.4. ZoneDefense with Anti-Virus Scanning
........................................
543
12.3.5. Limitations
.............................................................................
543
User Manual
8