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Prestige 660H/HW Series User’s Guide
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APPENDIX K
Brute-Force Password Guessing
Protection
The following describes the commands for enabling, disabling and configuring the brute-force
password guessing protection mechanism for the password. See
Appendix I on page 430 for
information on the command structure.
Table 154 Brute-Force Password Guessing Protection Commands
COMMAND DESCRIPTION
sys pwderrtm This command displays the brute-force guessing password protection settings.
sys pwderrtm 0 This command turns off the password’s protection from brute-force guessing. The
brute-force password guessing protection is turned off by default.
sys pwderrtm N This command sets the password protection to block all access attempts for N (a
number from 1 to 60) minutes after the third time an incorrect password is entered.
Example
sys pwderrtm 5
This command sets the password protection to block all access attempts for five minutes after
the third time an incorrect password is entered.
- Prestige 660H/HW Series 1
- Copyright 3
- Federal Communications 4
- Statement 4
- Safety Warnings 5
- ZyXEL Limited Warranty 6
- Customer Support 7
- 7 Customer Support 8
- Table of Contents 9
- Chapter 8 11
- Chapter 9 11
- List of Figures 25
- List of Tables 33
- About This User's Guide 39
- Syntax Conventions 39
- Related Documentation 39
- User Guide Feedback 40
- Graphics Icons Key 40
- Introduction to DSL 41
- 41 Introduction to DSL 42
- CHAPTER 1 43
- Built-in Switch 44
- High Speed Internet Access 44
- Firewall 44
- Dynamic DNS Support 46
- ADSL Standards 46
- Protocol Support 46
- Networking Compatibility 47
- Multiplexing 47
- Encapsulation 47
- Network Management 47
- Other PPPoE Features 47
- WEP Encryption 49
- Wi-Fi Protected Access 49
- 1.1.2.1 Internet Access 49
- 1.1.4 Front Panel LEDs 50
- Table 2 Front Panel LEDs 51
- CHAPTER 2 53
- 2.1.2 Resetting the Prestige 54
- CHAPTER 3 59
- CHAPTER 4 67
- LABEL DESCRIPTION 70
- CHAPTER 5 71
- 71 Chapter 5 Password Setup 72
- CHAPTER 6 73
- 6.2 DNS Server Address 74
- 6.4 LAN TCP/IP 75
- 6.4.3 RIP Setup 76
- 6.4.4 Multicast 76
- 6.5 Any IP 77
- 6.6 Configuring LAN 78
- Chapter 6 LAN Setup 78 79
- Figure 23 LAN Setup 79
- Table 14 LAN Setup 79
- 6.7 Configuring Static DHCP 80
- Chapter 6 LAN Setup 80 81
- Figure 24 LAN: Static DHCP 81
- Table 15 LAN: Static DHCP 81
- 81 Chapter 6 LAN Setup 82
- CHAPTER 7 83
- 7.2.3 Restricted Access 84
- 7.2.4 Hide Prestige Identity 84
- 7.2.5 G-plus 84
- 7.3.1 WEP Encryption 85
- Figure 26 Wireless Screen 86
- Table 16 Wireless LAN 86
- 7.4 Configuring MAC Filters 88
- 7.5 Introduction to WPA 90
- 7.8 Configuring RADIUS 99
- 7.9 Introduction to OTIST 100
- Figure 36 OTIST 101
- Table 24 OTIST 101
- 7.9.2 Starting OTIST 102
- 7.9.3 Notes on OTIST 103
- CHAPTER 8 105
- 8.3 PPPoE Encapsulation 106
- 8.4 Traffic Shaping 106
- 8.6 Configuring WAN Setup 107
- 107 Chapter 8 WAN Setup 108
- Figure 44 WAN Setup (PPPoE) 108
- Table 25 WAN Setup 108
- Chapter 8 WAN Setup 108 109
- 8.7 Traffic Redirect 110
- 8.8 Configuring WAN Backup 111
- 111 Chapter 8 WAN Setup 112
- Figure 47 WAN Backup 112
- Table 26 WAN Backup 112
- Check WAN IP Address 113
- 113 Chapter 8 WAN Setup 114
- CHAPTER 9 115
- 9.1.2 What NAT Does 116
- 9.1.3 How NAT Works 116
- 9.1.4 NAT Application 117
- 9.1.5 NAT Mapping Types 118
- 9.3 SUA Server 119
- 9.4 SIP ALG 120
- 9.5 Selecting the NAT Mode 121
- 9.6 Configuring SUA Server 121
- CHAPTER 10 127
- Figure 55 Dynamic DNS 128
- Table 34 Dynamic DNS 128
- CHAPTER 11 129
- Table 35 Time and Date 130
- 129 Chapter 11 Time and Date 130
- CHAPTER 12 131
- 131 Chapter 12 Firewalls 132
- 12.4 Denial of Service 133
- 12.4.2 Types of DoS Attacks 134
- Chapter 12 Firewalls 134 135
- Figure 59 SYN Flood 135
- 12.4.2.1 ICMP Vulnerability 136
- 12.5 Stateful Inspection 137
- 137 Chapter 12 Firewalls 138
- 12.5.3 TCP Security 139
- 12.5.4 UDP/ICMP Security 140
- 12.5.5 Upper Layer Protocols 140
- 12.6.1 Security In General 141
- 12.7.1 Packet Filtering: 142
- 12.7.2 Firewall 142
- Chapter 12 Firewalls 142 143
- 143 Chapter 12 Firewalls 144
- CHAPTER 13 145
- 13.3 Rule Logic Overview 146
- 13.3.3.1 Action 147
- 13.3.3.2 Service 147
- 13.3.3.3 Source Address 147
- 13.3.3.4 Destination Address 147
- 13.4.1 LAN to WAN Rules 148
- 13.4.2 WAN to LAN Rules 148
- 13.4.3 Alerts 149
- 13.6 Rule Summary 150
- Table 41 Rule Summary 151
- Address 154
- 13.7 Customized Services 155
- 13.9 Example Firewall Rule 156
- 13.10 Predefined Services 160
- 13.11 Anti-Probing 162
- 13.12.1 Threshold Values 164
- 13.12.2 Half-Open Sessions 164
- CHAPTER 14 167
- CHAPTER 15 171
- 15.2 Telnet 172
- 15.3 FTP 172
- 15.4 Web 173
- CHAPTER 16 175
- 16.2 UPnP and ZyXEL 176
- Table 52 Configuring UPnP 177
- Components selection box 178
- Figure 91 System Tray Icon 185
- Network 186
- CHAPTER 17 189
- 189 Chapter 17 Logs Screens 190
- Figure 96 Log Settings 190
- Table 53 Log Settings 190
- 17.3 Displaying the Logs 191
- 17.4 SMTP Error Messages 192
- 17.4.1 Example E-mail Log 193
- 193 Chapter 17 Logs Screens 194
- CHAPTER 18 195
- 18.5 Scheduler 198
- 18.7 Bandwidth Borrowing 200
- 18.8 Configuring Summary 201
- 18.9 Configuring Class Setup 203
- 18.9.1 DiffServ 204
- 18.10 Bandwidth Monitor 208
- CHAPTER 19 211
- 211 Chapter 19 Maintenance 212
- Figure 111 System Status 212
- Table 63 System Status 212
- 19.2.1 System Statistics 213
- 213 Chapter 19 Maintenance 214
- 19.3 DHCP Table Screen 215
- 19.4 Any IP Table Screen 216
- 19.5 Wireless Screen 216
- 19.6 Diagnostic Screens 217
- 217 Chapter 19 Maintenance 218
- 19.7 Firmware Screen 220
- Chapter 19 Maintenance 220 221
- Figure 120 Error Message 221
- 221 Chapter 19 Maintenance 222
- CHAPTER 20 223
- Figure 121 224
- Login Screen 224
- ? > or 225
- Table 73 Main Menu Summary 226
- 1234", and 226
- Figure 123 227
- Menu 23.1 Change Password 227
- *” for each character 227
- CHAPTER 21 229
- CHAPTER 22 233
- Press ENTER to Confirm 235
- CHAPTER 23 237
- Figure 130 238
- CHAPTER 24 241
- MAC address table 242
- CHAPTER 25 245
- 25.4 IP Alias Setup 246
- 25.5 Route IP Setup 247
- Menu 4 Internet Access Setup 249
- CHAPTER 26 251
- 26.4 Remote Node Filter 257
- 26.5.3 Advance Setup Options 259
- CHAPTER 27 261
- CHAPTER 28 265
- CHAPTER 29 269
- 29.3 NAT Setup 271
- Menu 15.1.255 is read-only 272
- 29.3.1.3 Ordering Your Rules 274
- 29.5 General NAT Examples 276
- Figure 165 NAT Example 1 277
- Figure 167 NAT Example 2 278
- Figure 169 NAT Example 3 279
- Figure 174 NAT Example 4 282
- CHAPTER 30 285
- CHAPTER 31 287
- Len Length 291
- 31.4.1 TCP/IP Filter Rule 292
- 31.4.2 Generic Filter Rule 294
- Length= 0 295
- 31.5 Filter Types and NAT 296
- 31.6 Example Filter 296
- Table 98 Filter Sets Table 298
- 31.7.1 Ethernet Traffic 299
- 31.7.2 Remote Node Filters 299
- CHAPTER 32 301
- 32.2 Supported MIBs 302
- 32.3 SNMP Configuration 302
- 32.4 SNMP Traps 303
- CHAPTER 33 305
- 33.1.3 IEEE802.1x 307
- CHAPTER 34 311
- 34.3 System Information 313
- 34.3.2 Console Port Speed 314
- 34.4 Log and Trace 315
- 34.4.2 Syslog and Accounting 316
- Figure 209 Syslog Example 317
- 34.5 Diagnostic 318
- CHAPTER 35 321
- 35.2 Backup Configuration 322
- 35.2.4 GUI-based FTP Clients 324
- 35.2.7 TFTP Command Example 325
- 35.3 Restore Configuration 326
- 35.4.1 Firmware File Upload 328
- 35.4.5 TFTP File Upload 330
- CHAPTER 36 333
- 36.2 Call Control Support 334
- 36.3 Time and Date Setting 335
- 36.3.1 Resetting the Time 336
- CHAPTER 37 339
- 37.4 System Timeout 341
- CHAPTER 38 343
- 38.4 IP Routing Policy Setup 344
- 38.5 Applying an IP Policy 347
- (192.168.1.100) 350
- CHAPTER 39 353
- CHAPTER 40 357
- Remember 358
- CHAPTER 41 361
- APPENDIX A 365
- Telephone Microfilters 366
- Prestige With ISDN 366
- APPENDIX B 369
- Installing Components 370
- Configuring 371
- Windows 2000/NT/XP 372
- Macintosh OS 8/9 376
- Macintosh OS X 378
- Verifying Settings 379
- APPENDIX C 381
- Subnet Masks 382
- Subnetting 382
- Example: Two Subnets 383
- Table 132 Subnet 1 384
- Table 133 Subnet 2 384
- Example: Four Subnets 385
- Example Eight Subnets 386
- APPENDIX D 389
- How PPPoE Works 390
- Prestige as a PPPoE Client 390
- APPENDIX E 391
- APPENDIX F 393
- Fragmentation Threshold 396
- Preamble Type 397
- IEEE 802.1x 398
- EAP Authentication 399
- Types of Authentication 400
- WEP Authentication Steps 401
- Dynamic WEP Key Exchange 402
- User Authentication 403
- Encryption 403
- Security Parameters Summary 404
- Requirements for Roaming 405
- APPENDIX G 407
- Types of Antennas For WLAN 408
- Connector Type 408
- APPENDIX H 409
- Command Examples 429
- APPENDIX I 431
- APPENDIX J 433
- APPENDIX K 435
- APPENDIX L 437
- APPENDIX M 439
- Table 158 TCP Reset Logs 441
- Table 160 ICMP Logs 441
- Table 161 CDR Logs 442
- Table 162 PPP Logs 442
- Table 163 UPnP Logs 443
- Table 165 Attack Logs 444
- Table 166 802.1X Logs 445
- Table 168 ICMP Notes 446
- Table 169 Syslog Logs 447
- Log Commands 448
- Log Command Example 449
- Numerics 451
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