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P-661H/HW Series User’s Guide
150 Chapter 8 Firewalls
Figure 81 Smurf Attack
8.4.2.1 ICMP Vulnerability
ICMP is an error-reporting protocol that works in concert with IP. The following ICMP types
trigger an alert:
8.4.2.2 Illegal Commands (NetBIOS and SMTP)
The only legal NetBIOS commands are the following - all others are illegal.
All SMTP commands are illegal except for those displayed in the following tables.
Table 57 ICMP Commands That Trigger Alerts
5 REDIRECT
13 TIMESTAMP_REQUEST
14 TIMESTAMP_REPLY
17 ADDRESS_MASK_REQUEST
18 ADDRESS_MASK_REPLY
Table 58 Legal NetBIOS Commands
MESSAGE:
REQUEST:
POSITIVE:
VE:
RETARGET:
KEEPALIVE:
Table 59 Legal SMTP Commands
AUTH DATA EHLO ETRN EXPN HELO HELP MAIL NOOP
QUIT RCPT RSET SAML SEND SOML TURN VRFY
- P-661H/HW Series 1
- Copyright 3
- Certifications 4
- Certifications 5 5
- Safety Warnings 6
- ZyXEL Limited Warranty 7
- Customer Support 8
- Customer Support 9 9
- P-661H/HW Series User’s Guide 10
- 10 Customer Support 10
- Table of Contents 11
- Chapter 3 12
- Chapter 4 12
- Chapter 5 13
- Chapter 6 13
- Chapter 7 14
- Chapter 8 15
- Chapter 9 15
- Chapter 13 17
- 22 Table of Contents 22
- List of Figures 23
- List of Tables 29
- About This User's Guide 33
- Syntax Conventions 33
- Related Documentation 33
- User Guide Feedback 34
- Graphics Icons Key 34
- CHAPTER 1 35
- Antenna 39
- WEP Encryption 39
- Output Power Management 39
- 1.4 Front Panel LEDs 40
- 1.5 Hardware Connection 41
- 1.6.2 Telephone Microfilters 42
- CHAPTER 2 45
- Figure 6 Password Screen 46
- 2.3.1 Using the Reset Button 47
- 2.4.1 Navigation Panel 47
- 2.4.2 Status Screen 51
- Table 4 Status Screen 52
- 2.4.3 Status: Any IP Table 53
- 2.4.5 Status: VPN Status 54
- Table 7 Status: VPN Status 55
- Figure 16 System General 58
- CHAPTER 3 59
- 3.1 Internet Setup Wizard 60
- 3.1.2 Manual Configuration 61
- 3.1.2.3 Screen 3 62
- Chapter 3 Wizards 63 63
- 64 Chapter 3 Wizards 64
- 3.1.3 No DSL Detection 65
- 66 Chapter 3 Wizards 66
- Chapter 3 Wizards 67 67
- 68 Chapter 3 Wizards 68
- Chapter 3 Wizards 69 69
- 70 Chapter 3 Wizards 70
- Chapter 3 Wizards 71 71
- 72 Chapter 3 Wizards 72
- 3.3.1 Screen 1 73
- 3.3.2 Screen 2 74
- 3.3.3 Screen 3 75
- 76 Chapter 3 Wizards 76
- CHAPTER 4 77
- 4.1.2 Multiplexing 78
- 4.1.3 VPI and VCI 78
- 4.1.4 IP Address Assignment 79
- 4.1.6 NAT 79
- 4.2 Metric 80
- 4.3 Traffic Shaping 80
- 4.3.1 ATM Traffic Classes 81
- 4.5 Internet Connection 82
- Chapter 4 WAN Setup 83 83
- 84 Chapter 4 WAN Setup 84
- Chapter 4 WAN Setup 85 85
- 86 Chapter 4 WAN Setup 86
- 4.6.1 More Connections Edit 87
- 88 Chapter 4 WAN Setup 88
- Chapter 4 WAN Setup 89 89
- 90 Chapter 4 WAN Setup 90
- 4.7 Traffic Redirect 91
- The screen appears as shown 92
- Chapter 4 WAN Setup 93 93
- Figure 45 WAN Backup Setup 93
- Table 29 WAN Backup Setup 93
- Check WAN IP Address 94
- CHAPTER 5 95
- 5.1.2 DHCP Setup 96
- 5.1.3 DNS Server Address 96
- 5.2 LAN TCP/IP 97
- 5.2.2 RIP Setup 98
- 5.2.3 Multicast 99
- 5.2.4 Any IP 99
- 5.2.4.1 How Any IP Works 100
- 5.3 Configuring LAN IP 101
- 102 Chapter 5 LAN Setup 102
- Table 31 Advanced LAN Setup 102
- 5.4 DHCP Setup 103
- 5.5 LAN Client List 104
- Chapter 5 LAN Setup 105 105
- Figure 51 LAN Client List 105
- Table 33 LAN Client List 105
- 5.6 LAN IP Alias 106
- Chapter 5 LAN Setup 107 107
- Table 34 LAN IP Alias 107
- 108 Chapter 5 LAN Setup 108
- CHAPTER 6 109
- 6.2.1 SSID 110
- 6.2.2 MAC Address Filter 110
- 6.2.3 User Authentication 110
- 6.2.4 Encryption 111
- 112 Chapter 6 Wireless LAN 112
- Chapter 6 Wireless LAN 113 113
- 6.4.1 No Security 114
- 6.4.2 WEP Encryption 114
- 6.4.3 WPA-PSK/WPA2-PSK 115
- 116 Chapter 6 Wireless LAN 116
- 6.4.4 WPA/WPA2 117
- ZyXEL Device is using 118
- Chapter 6 Wireless LAN 119 119
- Table 40 Wireless: WPA/WPA2 119
- 6.5 OTIST 120
- 6.5.1.1 AP 121
- 6.5.1.2 Wireless Client 122
- 6.5.2 Starting OTIST 123
- 6.5.3 Notes on OTIST 123
- 6.6 MAC Filter 124
- Chapter 6 Wireless LAN 125 125
- Table 43 MAC Address Filter 125
- 6.7 WMM QoS 126
- 6.7.3 Services 127
- 6.8 QoS Screen 128
- Chapter 6 Wireless LAN 129 129
- Figure 68 Wireless LAN: QoS 129
- Table 46 Wireless LAN: QoS 129
- 130 Chapter 6 Wireless LAN 130
- Chapter 6 Wireless LAN 131 131
- 132 Chapter 6 Wireless LAN 132
- CHAPTER 7 133
- 7.1.2 What NAT Does 134
- 7.1.3 How NAT Works 134
- 7.1.4 NAT Application 135
- 7.1.5 NAT Mapping Types 135
- 7.3 NAT General Setup 136
- 7.4 Port Forwarding 137
- Figure 74 Port Forwarding 139
- Table 52 Port Forwarding 140
- 7.6 Address Mapping 141
- CHAPTER 8BLUE 145
- 146 Chapter 8 Firewalls 146
- 8.4 Denial of Service 147
- 8.4.2 Types of DoS Attacks 148
- Chapter 8 Firewalls 149 149
- Figure 80 SYN Flood 149
- 8.4.2.1 ICMP Vulnerability 150
- 8.5 Stateful Inspection 151
- 152 Chapter 8 Firewalls 152
- 8.5.3 TCP Security 153
- 8.5.4 UDP/ICMP Security 153
- 8.5.5 Upper Layer Protocols 154
- 8.6.1 Security In General 154
- 8.7.1 Packet Filtering: 155
- 8.7.2 Firewall 156
- CHAPTER 9 157
- 9.3 Rule Logic Overview 158
- 9.4 Connection Direction 159
- 9.5 Triangle Route 160
- Figure 85 IP Alias 161
- Figure 86 Firewall: General 162
- Table 60 Firewall: General 162
- 9.7 Firewall Rules Summary 163
- Table 61 Firewall Rules 164
- 9.7.2 Customized Services 167
- 9.8 Example Firewall Rule 168
- 10.0.0.15 on the LAN 171
- 9.9 Predefined Services 172
- 9.10 Anti Probing 174
- 9.11 DoS Thresholds 175
- 9.11.2 Half-Open Sessions 176
- CHAPTER 10 179
- Figure 102 TMSS 3 Steps 181
- 10.2.1 General TMSS Settings 182
- 10.2.2 TMSS Exception List 184
- 10.3 TMSS Virus Protection 185
- 10.4 Parental Controls 186
- Table 71 Parental Controls 187
- 6 Then click the OK button 190
- CHAPTER 11 193
- CHAPTER 12 197
- 12.1.4 VPN Applications 198
- 12.2 IPSec Architecture 199
- 12.3 Encapsulation 199
- 12.4 IPSec and NAT 200
- Table 76 VPN and NAT 201
- CHAPTER 13 203
- 13.3 My IP Address 204
- 13.4 Secure Gateway Address 205
- 13.5 VPN Setup Screen 205
- 206 Chapter 13 VPN Screens 206
- Figure 121 VPN Setup 206
- Table 78 VPN Setup 206
- 13.6 Keep Alive 207
- 13.8 Remote DNS Server 208
- 13.9 ID Type and Content 209
- 210 Chapter 13 VPN Screens 210
- 13.10 Pre-Shared Key 211
- 13.11 Editing VPN Policies 211
- 212 Chapter 13 VPN Screens 212
- Table 84 Edit VPN Policies 212
- Chapter 13 VPN Screens 213 213
- 214 Chapter 13 VPN Screens 214
- Chapter 13 VPN Screens 215 215
- 13.12 IKE Phases 216
- 13.12.1 Negotiation Mode 217
- 218 Chapter 13 VPN Screens 218
- Chapter 13 VPN Screens 219 219
- 220 Chapter 13 VPN Screens 220
- 13.14 Manual Key Setup 221
- 13.15 Configuring Manual Key 221
- 222 Chapter 13 VPN Screens 222
- Figure 127 VPN: Manual Key 222
- Table 86 VPN: Manual Key 222
- Chapter 13 VPN Screens 223 223
- 13.16 Viewing SA Monitor 224
- Chapter 13 VPN Screens 225 225
- Figure 128 VPN: SA Monitor 225
- Table 87 VPN: SA Monitor 225
- 226 Chapter 13 VPN Screens 226
- Chapter 13 VPN Screens 227 227
- 228 Chapter 13 VPN Screens 228
- Chapter 13 VPN Screens 229 229
- 230 Chapter 13 VPN Screens 230
- CHAPTER 14 231
- 14.2.1 Static Route Edit 232
- Chapter 14 Static Route 233 233
- Table 92 Static Route Edit 233
- 234 Chapter 14 Static Route 234
- CHAPTER 15 235
- 15.5 Scheduler 236
- 15.7 Configuring Summary 240
- 15.8.1 Rule Configuration 243
- 15.9 Bandwidth Monitor 245
- CHAPTER 16 247
- Figure 140 Dynamic DNS 248
- Table 103 Dynamic DNS 248
- Device and the DDNS server 249
- CHAPTER 17 251
- 17.2 WWW 252
- 17.3 Telnet 253
- 17.4 Configuring Telnet 253
- 17.5 Configuring FTP 254
- 17.6 SNMP 255
- 17.6.1 Supported MIBs 256
- 17.6.2 SNMP Traps 257
- 17.6.3 Configuring SNMP 257
- 17.7 Configuring DNS 259
- 17.8 Configuring ICMP 259
- 17.9 TR-069 (P-661H Only) 261
- Table 112 TR-069 Commands 262
- CHAPTER 18 263
- 18.2 UPnP and ZyXEL 264
- Table 113 Configuring UPnP 265
- Components selection box 266
- Figure 160 System Tray Icon 272
- Network 273
- CHAPTER 19 275
- 276 Chapter 19 System 276
- 19.2 Time Setting 277
- 278 Chapter 19 System 278
- Chapter 19 System 279 279
- 280 Chapter 19 System 280
- CHAPTER 20 281
- 282 Chapter 20 Logs 282
- Table 116 View Logs 282
- Chapter 20 Logs 283 283
- Figure 168 Log Settings 283
- Table 117 Log Settings 283
- 284 Chapter 20 Logs 284
- CHAPTER 21 285
- 286 Chapter 21 Tools 286
- 21.2 Configuration 287
- 288 Chapter 21 Tools 288
- Table 119 Configuration 288
- 21.3 Restart 289
- 290 Chapter 21 Tools 290
- CHAPTER 22 291
- 22.2 DSL Line Diagnostic 292
- CHAPTER 23 293
- 23.3 Problems with the WAN 294
- Appendix A 297
- Product Specifications 297
- 298 Appendix A 298
- Table 127 Firmware 298
- Appendix A 299 299
- 300 Appendix A 300
- Appendix B 301
- About ADSL 301
- 302 Appendix B 302
- APPENDIX C 303
- 304 Appendix C 304
- Appendix D 305
- Installing Components 306
- Configuring 307
- Windows 2000/NT/XP 308
- Macintosh OS X 313
- Verifying Settings 315
- Using Configuration Files 317
- APPENDIX E 319
- 320 Appendix E 320
- Subnet Masks 321
- Subnetting 321
- Example: Two Subnets 322
- Example: Four Subnets 323
- Example Eight Subnets 324
- Appendix E 325 325
- Table 139 Eight Subnets 325
- 326 Appendix E 326
- Appendix F 327
- Command Interpreter 327
- 328 Appendix F 328
- Appendix G 329
- Firewall Commands 329
- 330 Appendix G 330
- Appendix G 331 331
- 332 Appendix G 332
- Appendix G 333 333
- 334 Appendix G 334
- Appendix H 335
- NetBIOS Filter Commands 335
- NetBIOS Filter Configuration 336
- Appendix I 337
- How PPPoE Works 338
- Appendix J 339
- Log Descriptions 339
- 340 Appendix J 340
- Table 145 System Error Logs 340
- Appendix J 341 341
- Table 147 TCP Reset Logs 341
- 342 Appendix J 342
- Table 149 ICMP Logs 342
- Table 150 CDR Logs 342
- Table 151 PPP Logs 342
- Appendix J 343 343
- Table 152 UPnP Logs 343
- 344 Appendix J 344
- Table 154 Attack Logs 344
- Appendix J 345 345
- Table 155 IPSec Logs 345
- Table 156 IKE Logs 345
- 346 Appendix J 346
- Appendix J 347 347
- 348 Appendix J 348
- Table 157 PKI Logs 348
- Appendix J 349 349
- 350 Appendix J 350
- Table 159 802.1X Logs 350
- Appendix J 351 351
- Table 160 ACL Setting Notes 351
- Table 161 ICMP Notes 351
- 352 Appendix J 352
- Table 162 Syslog Logs 352
- Log Commands 353
- Log Command Example 354
- APPENDIX K 355
- 356 Appendix K 356
- Appendix K 357 357
- Fragmentation Threshold 358
- Preamble Type 359
- IEEE 802.11g Wireless LAN 359
- Wireless Security Overview 360
- IEEE 802.1x 360
- Types of RADIUS Messages 361
- Types of Authentication 362
- Dynamic WEP Key Exchange 363
- WPA and WPA2 364
- User Authentication 365
- 366 Appendix K 366
- Security Parameters Summary 367
- 368 Appendix K 368
- APPENDIX L 369
- Figure 213 Internet Options 370
- Figure 214 Internet Options 371
- JavaScripts 372
- 3 Scroll down to Scripting 373
- Java Permissions 374
- JAVA (Sun) 375
- Figure 219 Java (Sun) 376
- Index 377 377
- 378 Index 378
- Index 379 379
- 380 Index 380
- Index 381 381
- 382 Index 382
- Index 383 383
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