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Chapter 20 Logs
NBG334W User’s Guide
199
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 82 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 83 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 92 on page 204.
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 92 on page 204.
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 81 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
- NBG334W User’s Guide 10
- Table of Contents 11
- List of Figures 19
- List of Tables 25
- Introduction 29
- CHAPTER 1 31
- 1.3 Router Mode 32
- 1.7 LEDs 33
- CHAPTER 2 35
- 2.3 Resetting the NBG334W 37
- 2.5.1 Navigation Panel 40
- Table 5 Screens Summary 41
- 2.5.2 Summary: Any IP Table 43
- Table 6 Summary: DHCP Table 44
- CHAPTER 3 47
- 3.2.1 System Name 48
- 3.2.2 Domain Name 49
- Chapter 3 Connection Wizard 50
- 3.3.1 Basic (WEP) Security 51
- 3.4.1 Ethernet Connection 53
- 3.4.2 PPPoE Connection 53
- 3.4.3 PPTP Connection 54
- Chapter 3 Connection Wizard 55
- 3.4.4 Your IP Address 56
- 3.4.9 WAN MAC Address 59
- CHAPTER 4 63
- Chapter 4 AP Mode 64
- Figure 30 Status: AP Mode 64
- Chapter 4 AP Mode 65
- 4.3.1 Navigation Panel 66
- 4.4.1 LAN Settings 67
- CHAPTER 5 73
- Requirements 74
- Setup Information 74
- 5.2.1 SSID 75
- 5.2.2 MAC Address Filter 75
- 5.2.3 User Authentication 76
- 5.2.4 Encryption 76
- 5.3 Roaming 77
- 5.4 Quality of Service 78
- 5.4.1 WMM QoS 79
- Chapter 5 Wireless LAN 80
- 5.5.1 No Security 81
- 5.5.2 WEP Encryption 81
- 5.5.3 WPA-PSK/WPA2-PSK 83
- 5.5.4 WPA/WPA2 84
- Chapter 5 Wireless LAN 85
- 5.6 MAC Filter 86
- 5.9 WiFi Protected Setup 90
- 5.9.2 WPS Station Screen 91
- Figure 45 WPS Station 92
- Table 36 WPS Station 92
- CHAPTER 6 93
- Wireless Client 95
- SSID SSID_Example3 96
- Chapter 6 Wireless Tutorial 97
- 6.4 Configure Your Notebook 98
- Chapter 6 Wireless Tutorial 100
- Figure 54 Link Status 100
- CHAPTER 7 101
- 7.4 Internet Connection 102
- 7.4.2 PPPoE Encapsulation 103
- Chapter 7 WAN 104
- Chapter 7 WAN 105
- 7.4.3 PPTP Encapsulation 106
- 7.5 Advanced WAN Screen 109
- Table 40 WAN > Advanced 110
- CHAPTER 8 111
- 8.2.3 Multicast 112
- 8.2.4 Any IP 112
- Chapter 8 LAN 113
- Figure 59 Any IP Example 113
- 8.3 LAN IP Screen 114
- 8.4 LAN IP Alias 114
- 8.5 Advanced LAN Screen 115
- Chapter 8 LAN 116
- CHAPTER 9 117
- 9.2 Guest WLAN MAC Filter 118
- 9.3 Guest WLAN IP Screen 119
- Internet 120
- Chapter 9 Guest WLAN 121
- Chapter 9 Guest WLAN 122
- CHAPTER 10 123
- Chapter 10 DHCP 124
- Chapter 10 DHCP 125
- 10.4 Client List Screen 126
- CHAPTER 11 129
- 11.3 General NAT Screen 130
- Table 52 NAT Application 132
- 11.4.1 Game List Example 133
- Figure 75 Game List Example 134
- 11.6 NAT Advanced Screen 135
- CHAPTER 12 139
- Chapter 12 Dynamic DNS 140
- Figure 78 Dynamic DNS 140
- Table 54 Dynamic DNS 140
- PART III 141
- CHAPTER 13 143
- 13.2 Triangle Routes 144
- Chapter 13 Firewall 145
- 13.4 Services Screen 146
- Chapter 13 Firewall 148
- CHAPTER 14 149
- Chapter 14 Content Filtering 150
- 14.5 Schedule 151
- Management 153
- CHAPTER 15 155
- CHAPTER 16 159
- Advanced screen 165
- Configuration 168
- CHAPTER 17 169
- 17.2 WWW Screen 170
- 17.3 Telnet 171
- 17.4 Telnet Screen 171
- 17.5 FTP Screen 172
- 17.6 DNS Screen 173
- Chapter 17 Remote Management 174
- CHAPTER 18 175
- 18.2 UPnP and ZyXEL 176
- 18.3 UPnP Screen 176
- Figure 107 System Tray Icon 183
- Network 184
- Maintenance and 187
- Troubleshooting 187
- CHAPTER 19 189
- 19.3 Time Setting Screen 190
- Chapter 19 System 191
- Chapter 19 System 192
- CHAPTER 20 193
- 20.2 Log Settings 194
- Chapter 20 Logs 195
- Chapter 20 Logs 196
- 20.3 Log Descriptions 197
- Table 79 System Error Logs 198
- Table 81 TCP Reset Logs 198
- Table 82 Packet Filter Logs 199
- Table 83 ICMP Logs 199
- Table 88 Attack Logs 201
- Table 89 PKI Logs 202
- Table 90 802.1X Logs 203
- Table 91 ACL Setting Notes 204
- Table 92 ICMP Notes 204
- Table 93 Syslog Logs 205
- CHAPTER 21 207
- 21.2 Configuration Screen 208
- 21.2.1 Backup Configuration 209
- 21.2.2 Restore Configuration 209
- 21.3 Restart Screen 210
- Chapter 21 Tools 211
- Chapter 21 Tools 212
- CHAPTER 22 213
- Chapter 22 Configuration Mode 214
- CHAPTER 23 215
- Chapter 23 Sys Op Mode 218
- CHAPTER 24 219
- Chapter 24 Language 220
- CHAPTER 25 221
- V I forgot the password 222
- FTP to upload new firmware 223
- 25.3 Internet Access 224
- AP or router) 225
- 25.6 Advanced Features 226
- Appendices and 227
- APPENDIX A 229
- Table 101 Firmware Features 230
- NBG334W 231
- Wall-mounting Instructions 232
- APPENDIX B 235
- JavaScripts 238
- Java Permissions 239
- JAVA (Sun) 240
- APPENDIX C 241
- Subnet Masks 242
- Notation 243
- Subnetting 244
- Example: Four Subnets 245
- Example: Eight Subnets 246
- Subnet Planning 247
- Configuring IP Addresses 248
- APPENDIX D 249
- Installing Components 250
- Configuring 251
- Windows 2000/NT/XP 252
- Macintosh OS 8/9 257
- Macintosh OS X 259
- Verifying Settings 260
- Using Configuration Files 263
- 25.6.1 Verifying Settings 264
- APPENDIX E 265
- Appendix E Wireless LANs 266
- Appendix E Wireless LANs 267
- Fragmentation Threshold 268
- Preamble Type 269
- IEEE 802.1x 269
- Types of RADIUS Messages 270
- Types of Authentication 271
- PEAP (Protected EAP) 272
- Dynamic WEP Key Exchange 272
- Encryption 273
- Security Parameters Summary 275
- APPENDIX F 277
- Appendix F Services 278
- Appendix F Services 279
- APPENDIX G 281
- ZyXEL Limited Warranty 283
- Appendix G Legal Information 284
- APPENDIX H 285
- Appendix H Customer Support 286
- Appendix H Customer Support 287
- Numerics 291
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