ZyXEL Communications ZyAIR G-160 User's Guide Page 183
- Page / 430
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
ZyAIR G-2000 Plus User’s Guide
Chapter 14 Firewalls 182
Figure 75 Three-Way Handshake
Under normal circumstances, the application that initiates a session sends a SYN
(synchronize) packet to the receiving server. The receiver sends back an ACK
(acknowledgment) packet and its own SYN, and then the initiator responds with an ACK
(acknowledgment). After this handshake, a connection is established.
a SYN Attack floods a targeted system with a series of SYN packets.
Each packet causes the targeted system to issue a SYN-ACK
response. While the targeted system waits for the ACK that follows
the SYN-ACK, it queues up all outstanding SYN-ACK responses on
what is known as a backlog queue. SYN-ACKs are moved off the
queue only when an ACK comes back or when an internal timer
(which is set at relatively long intervals) terminates the three-way
handshake. Once the queue is full, the system will ignore all
incoming SYN requests, making the system unavailable for
legitimate users.
- ZyAIR G-2000 Plus 1
- Copyright 3
- Federal Communications 4
- Commission (FCC) Interference 4
- Statement 4
- ZyXEL Limited Warranty 5
- Customer Support 6
- Customer Support 6 7
- 7 Customer Support 8
- Table of Contents 9
- Chapter 2 10
- Chapter 3 10
- Chapter 13 14
- Chapter 14 14
- Table of Contents 20 21
- 21 Table of Contents 22
- List of Figures 23
- List of Tables 29
- About This User's Guide 33
- Related Documentation 33
- User Guide Feedback 34
- Syntax Conventions 34
- Graphics Icons Key 35
- 35 Preface 36
- CHAPTER 1 37
- 1.2.2 Firmware Features 38
- 1.2.2.6 Certificates 39
- 1.2.2.8 SSL Passthrough 39
- CHAPTER 2 45
- 2.3 Resetting the ZyAIR 47
- Settings 48
- CHAPTER 3 49
- 3.1.4 WPA-PSK 50
- Chapter 3 Wizard Setup 50 51
- 3.4 Wizard Setup: Screen 3 52
- Shared Key 53
- 3.5 Wizard Setup: Screen 4 54
- Chapter 3 Wizard Setup 54 55
- 3.5.2 PPPoE Encapsulation 56
- 3.5.3 PPTP Encapsulation 57
- 57 Chapter 3 Wizard Setup 58
- 3.6 Wizard Setup: Screen 5 59
- 3.6.4 WAN MAC Address 60
- Chapter 3 Wizard Setup 60 61
- 61 Chapter 3 Wizard Setup 62
- 3.7 Basic Setup Complete 63
- 63 Chapter 3 Wizard Setup 64
- Figure 13 Wizard Finish 64
- CHAPTER 4 65
- 4.3 Dynamic DNS 66
- 4.4 Configuring Dynamic DNS 67
- 4.5 Configuring Password 68
- Chapter 4 System Screens 68 69
- Figure 17 Time Setting 69
- Table 16 Time Setting 69
- 69 Chapter 4 System Screens 70
- CHAPTER 5 71
- 5.3.3 RIP Setup 72
- 5.3.4 Multicast 72
- 5.4 Configuring IP 73
- 73 Chapter 5 LAN Screens 74
- Figure 18 LAN IP 74
- Table 17 LAN IP 74
- Chapter 5 LAN Screens 74 75
- 5.5 Configuring Static DHCP 76
- 5.6 Configuring IP Alias 77
- 77 Chapter 5 LAN Screens 78
- Figure 20 IP Alias 78
- Table 19 IP Alias 78
- CHAPTER 6 79
- 6.1.3 ESS 80
- 6.2 Wireless LAN Basics 81
- Figure 24 RTS/CTS 82
- 6.3 Configuring Wireless 83
- Figure 25 Wireless 84
- Table 20 Wireless 84
- 6.4 Configuring Roaming 85
- Figure 27 Roaming 87
- Table 21 Roaming 87
- CHAPTER 7 89
- 7.3 WEP Overview 91
- 7.5 Introduction to WPA 94
- 7.5.2 Encryption 95
- Figure 33 Wireless: WPA-PSK 97
- Table 25 Wireless: WPA-PSK 97
- Figure 35 Wireless: WPA 100
- Table 26 Wireless: WPA 100
- 7.9 Introduction to RADIUS 101
- 7.9.1.2 Accounting-Request 102
- 7.9.1.3 Accounting-Response 102
- 7.10 Configuring RADIUS 103
- Figure 37 Wireless: WPA 104
- Table 27 RADIUS 104
- 7.11 802.1x Overview 105
- LABEL DESCRIPTION 108
- 7.15 Configuring 802.1x 111
- Figure 40 Wireless: 802.1x 112
- 7.16 MAC Filter 113
- Table 31 MAC Address Filter 114
- CHAPTER 8 115
- Windows 117
- Table 33 My Certificates 118
- 8.3 Trusted AP Overview 119
- 8.4 Configuring Trusted AP 120
- 8.5 Trusted Users Overview 121
- Table 35 Trusted Users 122
- CHAPTER 9 125
- 9.2.1.1 Service Type 126
- 9.2.2 PPPoE Encapsulation 127
- 127 Chapter 9 WAN 128
- Chapter 9 WAN 128 129
- 9.2.3 PPTP Encapsulation 130
- Chapter 9 WAN 130 131
- Table 39 PPTP Encapsulation 131
- 9.3 TCP/IP Priority (Metric) 132
- 9.4 Configuring WAN IP 132
- Chapter 9 WAN 132 133
- Figure 52 WAN: IP 133
- Table 40 WAN: IP 133
- 133 Chapter 9 WAN 134
- 9.5 Configuring WAN MAC 135
- 135 Chapter 9 WAN 136
- CHAPTER 10 137
- 10.1.2 What NAT Does 138
- 10.1.3 How NAT Works 138
- 10.1.4 NAT Application 139
- 10.1.5 NAT Mapping Types 140
- 10.2 Using NAT 141
- 10.3 SUA Server 141
- 10.4 Configuring SUA Server 144
- Figure 57 SUA/NAT Setup 145
- Table 44 SUA/NAT Setup 145
- Figure 58 Address Mapping 147
- Table 45 Address Mapping 147
- 10.6 Trigger Port Forwarding 149
- Figure 61 Trigger Port 151
- Table 47 Trigger Port 151
- CHAPTER 11 153
- Figure 63 Static Route 154
- Table 48 Static Route 154
- Table 49 Static Route: Edit 155
- CHAPTER 12 157
- 12.2 Configuring WWW 158
- 12.3 Configuring Telnet 159
- 12.4 Configuring TELNET 160
- 12.5 Configuring FTP 161
- 12.6 SNMP 162
- 12.6.1 Supported MIBs 163
- 12.6.2 SNMP Traps 163
- 12.6.3 Configuring SNMP 164
- 12.7 Configuring DNS 166
- 12.8 Configuring Security 167
- Figure 72 Security 168
- Table 56 Security 168
- CHAPTER 13 169
- 13.2 UPnP and ZyXEL 170
- 13.3 Configuring UPnP 170
- Chapter 13 UPnP 170 171
- Figure 73 Configuring UPnP 171
- Table 57 Configuring UPnP 171
- 171 Chapter 13 UPnP 172
- Chapter 13 UPnP 172 173
- 173 Chapter 13 UPnP 174
- Chapter 13 UPnP 174 175
- 175 Chapter 13 UPnP 176
- Chapter 13 UPnP 176 177
- 177 Chapter 13 UPnP 178
- CHAPTER 14 179
- 179 Chapter 14 Firewalls 180
- 14.4 Denial of Service 181
- 14.4.2 Types of DoS Attacks 182
- Chapter 14 Firewalls 182 183
- 183 Chapter 14 Firewalls 184
- Figure 76 SYN Flood 184
- 14.4.2.1 ICMP Vulnerability 185
- 14.4.2.2 Traceroute 185
- 14.5 Stateful Inspection 186
- Chapter 14 Firewalls 186 187
- 14.5.4 UDP/ICMP Security 188
- 14.5.3 TCP Security 188
- 14.5.5 Upper Layer Protocols 189
- 14.7.1 Packet Filtering: 190
- 14.7.2 Firewall 190
- Chapter 14 Firewalls 190 191
- 191 Chapter 14 Firewalls 192
- CHAPTER 15 193
- 15.3 Rule Logic Overview 194
- 15.3.3.1 Action 195
- 15.3.3.2 Service 195
- 15.3.3.3 Source Address 195
- 15.3.3.4 Destination Address 195
- 15.4.1 LAN to WAN Rules 196
- 15.4.2 WAN to LAN Rules 196
- 15.5 Alerts 197
- 15.6 Configuring Firewall 197
- 15.6.1 Rule Summary 198
- Figure 82 Rule Summary 199
- Table 61 Rule Summary 199
- Address 202
- 15.7 Example Firewall Rule 204
- Figure 86 Rule Edit Example 205
- 15.8 Predefined Services 207
- CHAPTER 16 211
- Figure 90 Content Filter 212
- Table 65 Content Filter 212
- CHAPTER 17 215
- 17.3 Configuration Summary 216
- 17.4 My Certificates 216
- Chapter 17 Certificates 216 217
- Figure 91 My Certificates 217
- Table 66 My Certificates 217
- 217 Chapter 17 Certificates 218
- 17.6 Importing a Certificate 219
- 17.7 Creating a Certificate 220
- Chapter 17 Certificates 220 221
- 221 Chapter 17 Certificates 222
- 17.8 My Certificate Details 223
- 223 Chapter 17 Certificates 224
- Chapter 17 Certificates 224 225
- 17.9 Trusted CAs 226
- Chapter 17 Certificates 226 227
- Figure 95 Trusted CAs 227
- Table 70 Trusted CAs 227
- 227 Chapter 17 Certificates 228
- Figure 96 Trusted CA Import 228
- Table 71 Trusted CA Import 228
- Chapter 17 Certificates 228 229
- 229 Chapter 17 Certificates 230
- Chapter 17 Certificates 230 231
- Table 72 Trusted CA Details 231
- 231 Chapter 17 Certificates 232
- CHAPTER 18 233
- 233 Chapter 18 Log Screens 234
- Table 73 View Log 234
- Chapter 18 Log Screens 234 235
- Figure 99 Log Settings 235
- 235 Chapter 18 Log Screens 236
- Table 74 Log Settings 236
- 18.3 Configuring Reports 237
- 237 Chapter 18 Log Screens 238
- Figure 100 Reports 238
- Table 75 Reports 238
- Chapter 18 Log Screens 238 239
- 239 Chapter 18 Log Screens 240
- CHAPTER 19 241
- 241 Chapter 19 Maintenance 242
- Figure 101 System Status 242
- Table 76 System Status 242
- 19.3 DHCP Table Screen 243
- 19.4 Association List 244
- 19.5 F/W Upload Screen 245
- 245 Chapter 19 Maintenance 246
- Figure 105 Firmware Upload 246
- Table 80 Firmware Upload 246
- Chapter 19 Maintenance 246 247
- 19.6 Configuration Screen 248
- 19.6.1 Backup Configuration 249
- 249 Chapter 19 Maintenance 250
- 19.7 Restart Screen 251
- 251 Chapter 19 Maintenance 252
- Figure 114 Restart Screen 252
- CHAPTER 20 253
- Figure 116 Login Screen 254
- Table 82 Main Menu Commands 255
- Table 83 Main Menu Summary 257
- CHAPTER 21 259
- 259 Chapter 21 General Setup 260
- Chapter 21 General Setup 260 261
- 261 Chapter 21 General Setup 262
- CHAPTER 22 263
- CHAPTER 23 265
- 265 Chapter 23 LAN Setup 266
- Chapter 23 LAN Setup 266 267
- 23.3.1 IP Alias Setup 268
- 23.4 Wireless LAN Setup 269
- 269 Chapter 23 LAN Setup 270
- Chapter 23 LAN Setup 270 271
- 271 Chapter 23 LAN Setup 272
- Chapter 23 LAN Setup 272 273
- 273 Chapter 23 LAN Setup 274
- CHAPTER 24 275
- 24.5 Basic Setup Complete 279
- CHAPTER 25 281
- 25.2.2 PPPoE Encapsulation 283
- 25.2.3 PPTP Encapsulation 285
- 25.3 Edit IP 286
- 25.4 Remote Node Filter 288
- CHAPTER 26 291
- CHAPTER 27 293
- CHAPTER 28 295
- 28.3 NAT Setup 297
- 28.3.1 Address Mapping Sets 298
- 28.3.1.2 Ordering Your Rules 300
- 28.5 General NAT Examples 303
- Figure 155 NAT Example 1 304
- Figure 157 NAT Example 2 305
- Figure 159 NAT Example 3 306
- Set Name= NAT_SET 308
- Figure 164 NAT Example 4 310
- CHAPTER 29 313
- 29.3 Example Filter 322
- 29.4 Filter Types and NAT 324
- 29.5 Firewall Versus Filters 325
- 29.6 Applying a Filter 325
- HTTP connections 326
- CHAPTER 30 327
- CHAPTER 31 329
- 31.2 Supported MIBs 330
- 31.3 SNMP Configuration 330
- 31.4 SNMP Traps 331
- Table 111 SNMP Traps 332
- CHAPTER 32 333
- RADIUS Server as shown next 334
- 32.1.3 802.1x 335
- CHAPTER 33 339
- 33.2 System Information 341
- 33.3 Log and Trace 342
- 33.3.2 UNIX Syslog 343
- 33.3.2.1 CDR 344
- 33.3.2.2 Packet triggered 344
- 33.3.2.3 Filter log 345
- 33.3.2.4 PPP log 345
- 33.3.2.5 Firewall log 346
- 33.4 Diagnostic 347
- 33.4.1 WAN DHCP 348
- FIELD DESCRIPTION 349
- CHAPTER 34 351
- 34.2 Backup Configuration 352
- 34.2.3 GUI-based FTP Clients 354
- 34.2.6 Example: TFTP Command 355
- 34.3 Restore Configuration 356
- 34.4.1 Firmware Upload 358
- 34.4.4 TFTP File Upload 360
- 34.4.5 Example: TFTP Command 361
- CHAPTER 35 363
- 35.2 Call Control Support 364
- 35.2.1 Budget Management 365
- 35.2.2 Call History 365
- 35.3 Time and Date Setting 366
- 35.3.1 Resetting the Time 368
- CHAPTER 36 369
- 36.1.1 Telnet 370
- 36.1.2 FTP 371
- 36.1.3 Web 371
- 36.3 System Timeout 372
- CHAPTER 37 373
- Appendix A 377
- Troubleshooting 377
- Problems with the Password 378
- Problems with Telnet 378
- Appendix B 379
- Brute-Force Password Guessing 379
- Protection 379
- 379 Appendix B 380
- Appendix C 381
- Installing Components 382
- Configuring 383
- Windows 2000/NT/XP 384
- Appendix C 384 385
- 385 Appendix C 386
- Appendix C 386 387
- Macintosh OS 8/9 388
- Appendix C 388 389
- Macintosh OS X 390
- Verifying Settings 391
- 391 Appendix C 392
- Appendix D 393
- 393 Appendix D 394
- IP addresses dynamically 395
- 395 Appendix D 396
- Appendix E 397
- IP Subnetting 397
- Subnet Masks 398
- Subnetting 398
- Example: Two Subnets 399
- 399 Appendix E 400
- Table 138 Subnet 1 400
- Table 139 Subnet 2 400
- Example: Four Subnets 401
- Example Eight Subnets 402
- Appendix E 402 403
- 403 Appendix E 404
- Appendix F 405
- Command Interpreter 405
- 405 Appendix F 406
- Appendix G 407
- Log Descriptions 407
- Log Commands 408
- Displaying Logs 409
- Log Command Example 410
- Appendix H 411
- Wireless LAN and IEEE 802.11 411
- 411 Appendix H 412
- Appendix H 412 413
- 413 Appendix H 414
- Appendix I 415
- Wireless LAN With IEEE 802.1x 415
- 415 Appendix I 416
- Appendix I 416 417
- 417 Appendix I 418
- Appendix J 419
- Types of EAP Authentication 419
- PEAP (Protected EAP) 420
- Appendix K 421
- Recommendation 421
- Connector Type 422
- Appendix L 423
- Power Adaptor Specifications 423
- 423 Appendix L 424
- Numerics 425
- ZyAIR G-3000 User’s Guide 426
- 425 Index 426
- Index 426 427
- 427 Index 428
- Index 428 429
- 429 Index 430
Related products and manuals for Routers ZyXEL Communications ZyAIR G-160
Routers ZyXEL Communications P8701T User's Guide
(240 pages)
(240 pages)
Routers ZyXEL Communications P-330W User's Guide
(125 pages)
(125 pages)
Routers ZyXEL Communications P-304 User's Guide
(333 pages)
(333 pages)
© 2020, manymanuals.com. All rights reserved. | 0.088 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals