ZyXEL NBG420N Manuel d'utilisateur Page 239
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Chapter 21 Logs
NBG420N User’s Guide
239
Firewall session time
out, sent TCP RST
The router sent a TCP reset packet when a dynamic firewall
session timed out.
The default timeout values are as follows:
ICMP idle timeout: 3 minutes
UDP idle timeout: 3 minutes
TCP connection (three way handshaking) timeout: 270 seconds
TCP FIN-wait timeout: 2 MSL (Maximum Segment Lifetime set in
the TCP header).
TCP idle (established) timeout (s): 150 minutes
TCP reset timeout: 10 seconds
Exceed MAX incomplete,
sent TCP RST
The router sent a TCP reset packet when the number of
incomplete connections (TCP and UDP) exceeded the user-
configured threshold. (Incomplete count is for all TCP and UDP
connections through the firewall.)Note: When the number of
incomplete connections (TCP + UDP) > “Maximum Incomplete
High”, the router sends TCP RST packets for TCP connections
and destroys TOS (firewall dynamic sessions) until incomplete
connections < “Maximum Incomplete Low”.
Access block, sent TCP
RST
The router sends a TCP RST packet and generates this log if you
turn on the firewall TCP reset mechanism (via CI command: "sys
firewall tcprst").
Table 92 Packet Filter Logs
LOG MESSAGE DESCRIPTION
[TCP | UDP | ICMP | IGMP |
Generic] packet filter
matched (set:%d, rule:%d)
Attempted access matched a configured filter rule (denoted
by its set and rule number) and was blocked or forwarded
according to the rule.
Table 93 ICMP Logs
LOG MESSAGE DESCRIPTION
Firewall default policy: ICMP
<Packet Direction>, <type:%d>,
<code:%d>
ICMP access matched the default policy and was
blocked or forwarded according to the user's setting. For
type and code details, see Table 104 on page 247.
Firewall rule [NOT] match: ICMP
<Packet Direction>, <rule:%d>,
<type:%d>, <code:%d>
ICMP access matched (or didn’t match) a firewall rule
(denoted by its number) and was blocked or forwarded
according to the rule. For type and code details, see
Table 104 on page 247.
Triangle route packet forwarded:
ICMP
The firewall allowed a triangle route session to pass
through.
Packet without a NAT table entry
blocked: ICMP
The router blocked a packet that didn’t have a
corresponding NAT table entry.
Unsupported/out-of-order ICMP:
ICMP
The firewall does not support this kind of ICMP packets
or the ICMP packets are out of order.
Router reply ICMP packet: ICMP The router sent an ICMP reply packet to the sender.
Table 91 TCP Reset Logs (continued)
LOG MESSAGE DESCRIPTION
- User’s Guide 1
- About This User's Guide 3
- Document Conventions 4
- Icons Used in Figures 5
- Safety Warnings 6
- Safety Warnings 7
- Contents Overview 10
- NBG420N User’s Guide 10
- Table of Contents 11
- Chapter 7 13
- List of Figures 19
- List of Tables 25
- Introduction 29
- CHAPTER 1 31
- 1.3 AP Mode 32
- 1.7 LEDs 33
- CHAPTER 2 35
- Chapter 2 The WPS Button 36
- CHAPTER 3 37
- Chapter 23 on page 257 38
- 3.3 Resetting the NBG420N 39
- 3.5.1 Navigation Panel 42
- Table 5 Screens Summary 43
- 3.5.2 Summary: Any IP Table 44
- Table 6 Summary: DHCP Table 45
- 3.5.6 Summary: VPN Monitor 47
- CHAPTER 4 49
- 4.2.1 System Name 50
- 4.2.2 Domain Name 51
- Chapter 4 Connection Wizard 52
- 4.3.1 Basic (WEP) Security 53
- 4.4.1 Ethernet Connection 55
- 4.4.2 PPPoE Connection 55
- 4.4.3 PPTP Connection 56
- Chapter 4 Connection Wizard 57
- 4.4.4 Your IP Address 58
- 4.4.9 WAN MAC Address 61
- CHAPTER 5 65
- Chapter 5 AP Mode 66
- Figure 32 Status: AP Mode 66
- Chapter 5 AP Mode 67
- 5.3.1 Navigation Panel 68
- 5.4.1 LAN Settings 69
- CHAPTER 6 73
- Chapter 6 Tutorials 74
- Wireless Client 75
- NBG420N 75
- SSID SSID_Example3 76
- Chapter 6 Tutorials 77
- Figure 39 Status: AP Mode 78
- Figure 45 Property 81
- Figure 46 Local Policy 81
- Figure 47 Remote Policy 82
- Figure 49 IPSec Algorithm 82
- Figure 55 IPSec Algorithm 84
- Figure 56 VPN Summary 84
- Figure 58 SA Monitor 85
- CHAPTER 7 89
- 7.2.1 SSID 90
- 7.2.2 MAC Address Filter 90
- 7.2.3 User Authentication 90
- 7.2.4 Encryption 91
- 7.3 Roaming 92
- 7.4 Quality of Service 93
- 7.4.1 WMM QoS 94
- 7.5.1 No Security 96
- 7.5.2 WEP Encryption 96
- 7.5.3 WPA-PSK/WPA2-PSK 98
- 7.5.4 WPA/WPA2 99
- Chapter 7 Wireless LAN 100
- 7.6 MAC Filter 101
- Chapter 7 Wireless LAN 103
- 7.9 WiFi Protected Setup 106
- 7.9.2 WPS Station Screen 107
- 7.9.3 Scheduling 107
- Figure 72 Scheduling 108
- Table 39 Scheduling 108
- 7.10.1 Login Screen 109
- 7.10.2 System Status 110
- 7.10.3 WPS in Progress 112
- 7.10.4 Port Forwarding 113
- Figure 76 Port Forwarding 114
- Table 42 Port Forwarding 114
- Figure 77 Login Screen 115
- CHAPTER 8 117
- 8.4 Internet Connection 118
- 8.4.2 PPPoE Encapsulation 119
- Chapter 8 WAN 120
- Chapter 8 WAN 121
- 8.4.3 PPTP Encapsulation 122
- 8.5 Advanced WAN Screen 125
- Table 46 WAN > Advanced 126
- CHAPTER 9 127
- 9.2.3 Multicast 128
- 9.2.4 Any IP 128
- Chapter 9 LAN 129
- Figure 82 Any IP Example 129
- 9.3 LAN IP Screen 130
- 9.4 LAN IP Alias 130
- 9.5 Advanced LAN Screen 131
- Chapter 9 LAN 132
- CHAPTER 10 133
- Chapter 10 DHCP 134
- 10.4 Client List Screen 135
- CHAPTER 11 137
- 11.3 General NAT Screen 138
- Table 54 NAT Application 140
- 11.4.1 Game List Example 141
- Figure 92 Game List Example 142
- 11.6 NAT Advanced Screen 143
- CHAPTER 12 147
- Chapter 12 Dynamic DNS 148
- Figure 95 Dynamic DNS 148
- Table 56 Dynamic DNS 148
- Chapter 12 Dynamic DNS 149
- PART III 151
- CHAPTER 13 153
- 13.2 Triangle Routes 154
- Chapter 13 Firewall 155
- 13.4 Services Screen 156
- Chapter 13 Firewall 158
- CHAPTER 14 161
- Chapter 14 Content Filtering 162
- 14.5 Schedule 163
- CHAPTER 15 165
- Chapter 15 IPSec VPN 166
- 15.2 The General Screen 167
- Chapter 15 IPSec VPN 169
- 15.3 The SA Monitor Screen 183
- IKE SA Proposal 185
- Authentication 186
- Negotiation Mode 187
- VPN, NAT, and NAT Traversal 187
- IPSec Protocol 188
- Encapsulation 188
- Additional IPSec VPN Topics 190
- Management 193
- CHAPTER 16 195
- CHAPTER 17 199
- Advanced screen 203
- CHAPTER 18 209
- 18.2 WWW Screen 210
- 18.3 Telnet 211
- 18.4 Telnet Screen 211
- 18.5 FTP Screen 212
- 18.6 DNS Screen 212
- Chapter 18 Remote Management 213
- Chapter 18 Remote Management 214
- CHAPTER 19 215
- 19.2 UPnP and ZyXEL 216
- 19.3 UPnP Screen 216
- Figure 140 System Tray Icon 223
- Network 224
- Maintenance and 227
- Troubleshooting 227
- CHAPTER 20 229
- 20.3 Time Setting Screen 230
- Chapter 20 System 231
- Chapter 20 System 232
- CHAPTER 21 233
- 21.2 Log Settings 234
- Chapter 21 Logs 235
- Chapter 21 Logs 236
- 21.3 Log Descriptions 237
- Table 89 System Error Logs 238
- Table 91 TCP Reset Logs 238
- Table 92 Packet Filter Logs 239
- Table 93 ICMP Logs 239
- Table 98 Attack Logs 241
- Table 99 IPSec Logs 242
- Table 100 IKE Logs 242
- Table 101 PKI Logs 245
- Table 102 802.1X Logs 246
- Table 103 ACL Setting Notes 247
- Table 104 ICMP Notes 247
- Table 105 Syslog Logs 248
- CHAPTER 22 251
- 22.2 Configuration Screen 252
- 22.2.1 Backup Configuration 253
- 22.2.2 Restore Configuration 253
- 22.3 Restart Screen 254
- 22.4 Wake On LAN 255
- Chapter 22 Tools 256
- CHAPTER 23 257
- Chapter 23 Configuration Mode 258
- CHAPTER 24 259
- Internet 260
- Chapter 24 Sys Op Mode 262
- CHAPTER 25 263
- Chapter 25 Language 264
- CHAPTER 26 265
- V I forgot the password 266
- FTP to upload new firmware 267
- 26.3 Internet Access 268
- AP or router) 269
- 26.6 Advanced Features 270
- Appendices and 271
- APPENDIX A 273
- Table 114 Firmware Features 274
- Wall-mounting Instructions 276
- APPENDIX B 279
- JavaScripts 282
- Java Permissions 283
- JAVA (Sun) 284
- APPENDIX C 285
- Subnet Masks 286
- Notation 287
- Subnetting 288
- Example: Four Subnets 289
- Example: Eight Subnets 290
- Subnet Planning 291
- Configuring IP Addresses 292
- APPENDIX D 293
- Installing Components 294
- Configuring 295
- Windows 2000/NT/XP 296
- Macintosh OS 8/9 301
- Macintosh OS X 303
- Verifying Settings 304
- Using Configuration Files 307
- 26.6.1 Verifying Settings 308
- APPENDIX E 309
- Appendix E Wireless LANs 310
- Appendix E Wireless LANs 311
- Fragmentation Threshold 312
- Preamble Type 313
- IEEE 802.1x 313
- Types of RADIUS Messages 314
- Types of Authentication 315
- PEAP (Protected EAP) 316
- Dynamic WEP Key Exchange 316
- Encryption 317
- Security Parameters Summary 319
- APPENDIX F 321
- Appendix F Services 322
- Appendix F Services 323
- APPENDIX G 325
- ZyXEL Limited Warranty 327
- Appendix G Legal Information 328
- APPENDIX H 329
- Appendix H Customer Support 330
- Appendix H Customer Support 331
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