Zyxel-communications Broadband Security Gateway P-312 Manuale Utente Scaricare il pdf (Pagina 202)

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Prestige 312 1
FCC Statement iii 3
Canadian Users 4
Customer Support 8
Table of Contents 9
List of Figures 16
List Of Tables 23
Part I: 29
Chapter 1 31
Getting to Know Your Prestige 31
Chapter 2 35
2.4 Housing 38
2.5 Power Up Your Prestige 38
Enter Password : XXXX 39
2.6.1 Main Menu 40
2.7.1 Resetting the Prestige 41
2.8 General Setup 42
2.9 WAN Setup 44
2.10 LAN Setup 45
2.10.1 LAN Port Filter Setup 46
Chapter 3 47
Internet Access 47
3.1.3 Private IP Addresses 48
3.1.4 RIP Setup 48
3.1.5 DHCP Configuration 49
3.1.6 IP Multicast 49
3.1.7 IP Alias 50
3.2.1 IP Alias Setup 53
3.3 Internet Access Setup 54
3.3.2 PPTP Encapsulation 55
3.3.4 PPPoE Encapsulation 56
3.4 Basic Setup Complete 58
Part II: 59
Chapter 4 60
Remote Node Setup 60
4-2 Remote Node Setup 61
4.1.2 PPPoE Encapsulation 62
4.1.3 PPTP Encapsulation 63
Remote Node Setup 4-5 64
4-8 Remote Node Setup 67
4.3 Remote Node Filter 68
4-10 Remote Node Setup 69
Chapter 5 70
IP Static Route Setup 70
5.1 IP Static Route Setup 71
IP Static Route Setup 5-3 72
Chapter 6 74
6.1.3 How NAT works 75
6.1.4 NAT Mapping Types 75
6.2 SMT Menus 77
6.2.2 Configuring NAT 79
6.3 NAT Server Sets 84
6.4 Examples 86
6-20 NAT 93
Part III: 94
Chapter 7 96
Filter Configuration 96
Filter Rule 98
Filter Set 98
7.2 Configuring a Filter Set 99
Filters 7-5 100
7.2.3 TCP/IP Filter Rule 102
7-8 Filters 103
Filters 7-9 104
7-10 Filters 105
Filters 7-11 106
7.2.4 Generic Filter Rule 107
Filters 7-13 108
7.3 Example Filter 109
7.4 Filter Types and NAT 111
7.5 Firewall 112
7.6.2 Remote Node Filters 113
Chapter 8 114
SNMP Configuration 114
8-2 SNMP 115
Chapter 9 116
9.1 System Status 117
9.2.1 System Information 119
9.3 Log and Trace 120
9.3.1 Viewing Error Log 121
9.3.2 UNIX Syslog 121
2. Packet triggered 123
3. Filter log 123
4. PPP log 124
5. Firewall log 124
9.4 Diagnostic 125
9.4.1 WAN DHCP 126
Chapter 10 128
Transferring Files 128
10.2 Backup Configuration 129
10.3 Restore Configuration 130
10.4 Upload Firmware 130
10.5 TFTP File Transfer 132
10.5.1 Example TFTP Command 133
10.6 FTP File Transfer 134
Chapter 11 138
11.2 Call Control Support 139
11.2.2 Call History 140
11.3 Time and Date Setting 141
11.4 Remote Management Setup 143
11.5 Boot Commands 144
Chapter 12 146
12.3.2 System Timeout 147
Part IV: 148
Chapter 13 149
What is a Firewall 149
13.3 Denial of Service 151
13.3.2 Types of DoS attacks 152
13.4 Stateful Inspection 154
13.4.3 TCP Security 156
13.4.4 UDP/ICMP Security 157
13.4.5 Upper Layer Protocols 157
13.5.1 Security In General 158
What Is a Firewall? 13-11 159
Chapter 14 161
14.1.1 View Firewall Log 162
14.1.2 Attack Types 162
14.3.1 Packet Filtering: 166
14.3.2 Firewall: 167
Chapter 15 169
15.2 Enabling the Firewall 170
15.3 E-Mail 171
15.3.2 What are Logs? 172
Table 15-1 E-Mail 173
Figure 15-5 173
15.3.3 SMTP Error Messages 174
15.3.4 Example E-Mail Log 174
15.4 Attack Alert 175
15.4.1 Threshold Values: 176
15.4.2 Half-Open Sessions 176
Table 15-3 Attack Alert 178
Chapter 16 181
Creating Custom Rules 181
16.2.2 Security Ramifications 182
16.3 Connection Direction 183
16.4 Services Supported 184
Creating Custom Rules 16-5 185
Table 16-1 Services Supported 185
16.5 Rule Summary 186
Creating Custom Rules 16-7 187
Table 16-1 187
16-8 Creating Custom Rules 188
Creating Custom Rules 16-9 189
16-10 Creating Custom Rules 190
Creating Custom Rules 16-11 191
16.6 Timeout 192
Creating Custom Rules 16-13 193
Figure 16-6 Timeout Screen 193
16-14 Creating Custom Rules 194
Table 16-5 Timeout Menu 194
Chapter 17 195
Custom Ports 195
17-2 Custom Ports 196
Table 17-1 Custom Ports 196
Custom Ports 17-3 197
17-4 Custom Ports 198
Chapter 18 199
18-2 Logs 200
Table 18-1 Log Screen 200
Logs 18-3 201
Chapter 19 203
Example Firewall Rules 203
Internet 213
Chapter 20 217
Content Filtering 217
20.2 Blocking URLs 218
Content Filtering 20-3 219
Part V: 220
Chapter 21 222
Troubleshooting 222
21-2 Troubleshooting 223
Troubleshooting 21-3 224
Appendix A 226
Appendix B 228
Call Connection 229
PPP Data Connection 229
Appendix C 230
Hardware Specifications 230
Appendix D 231
Important Safety Instructions 231
Appendix E 232
Firewall CLI Commands 232
L CLI Commands 233
CLI Commands M 234
N CLI Commands 235
CLI Commands O 236
Appendix F 237
Power Adapter Specs 237
Glossary of Terms 239
Glossary S 240
T Glossary 241
Glossary U 242
V Glossary 243
Glossary W 244
X Glossary 245
Glossary Y 246
Z Glossary 247
Glossary AA 248
Index CC 250
DD Index 251
Index EE 252
FF Index 253
Index GG 254

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Zyxel-communications Broadband Security Gateway P-312 Manuale Utente Pagina 202

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