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Chapter 11 Firewall

ZyWALL 2 Plus User’s Guide

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Figure 139 My Service Firewall Rule Example: Rule Summary

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Default Chapter3
- About this User's Guide3
- Document Conventions4
- Safety Warnings6
- Table of Contents7
- Contents Overview7
- Table of Contents9
- List of Figures25
- List of Tables37
- Introduction and Registration43
- Part I: Introduction and Registration43
Chapter 1 Getting to Know Your Zywall45
- Zywall Internet Security Appliance Overview45
- Applications for the Zywall45
  - Secure Broadband Internet Access Via Cable or DSL Modem45
  - VPN Application46
- Ways to Manage the Zywall46
- Figure 1 Secure Internet Access Via Cable, DSL or Wireless Modem46
- Figure 2 VPN Application46
- Good Habits for Managing the Zywall47
- Leds47
- Figure 3 Front Panel47
- Table 1 Front Panel Leds47
Chapter 2 Introducing the Web Configurator49
- Web Configurator Overview49
- Accessing the Zywall Web Configurator49
- Figure 4 Change Password Screen50
- Figure 5 Replace Certificate Screen50
- Resetting the Zywall51
- Navigating the Zywall Web Configurator52
- Wizard Setup67
Chapter 3 Wizard Setup67
- Wizard Setup Overview67
- Internet Access67
  - Figure 14 Wizard Setup Welcome67
  - Figure 15 ISP Parameters: Ethernet Encapsulation68
  - ISP Parameters68
  - Table 11 ISP Parameters: Ethernet Encapsulation68
  - Figure 16 ISP Parameters: Pppoe Encapsulation69
  - Pptp Encapsulation70
  - Table 12 ISP Parameters: Pppoe Encapsulation70
  - Figure 17 ISP Parameters: PPTP Encapsulation71
  - Table 13 ISP Parameters: PPTP Encapsulation71
  - Figure 18 Internet Access Wizard: Second Screen72
  - Internet Access Wizard: Second Screen72
  - Figure 19 Internet Access Setup Complete73
  - Internet Access Wizard: Registration73
  - Figure 20 Internet Access Wizard: Registration74
  - Table 14 Internet Access Wizard: Registration74
  - Figure 21 Internet Access Wizard: Registration in Progress75
  - Figure 22 Internet Access Wizard: Status75
  - Figure 23 Internet Access Wizard: Registration Failed75
- VPN Wizard Gateway Setting76
- Figure 24 Internet Access Wizard: Registered Device76
- Figure 25 Internet Access Wizard: Activated Services76
- VPN Wizard Network Setting77
- Figure 26 VPN Wizard: Gateway Setting77
- Table 15 VPN Wizard: Gateway Setting77
- Figure 27 VPN Wizard: Network Setting78
- Table 16 VPN Wizard: Network Setting78
- VPN Wizard IKE Tunnel Setting (IKE Phase 1)79
- Figure 28 VPN Wizard: IKE Tunnel Setting79
- VPN Wizard Ipsec Setting (IKE Phase 2)80
- Table 17 VPN Wizard: IKE Tunnel Setting80
- Figure 29 VPN Wizard: Ipsec Setting81
- Table 18 VPN Wizard: Ipsec Setting81
- VPN Wizard Status Summary82
- Figure 30 VPN Wizard: VPN Status82
- Table 19 VPN Wizard: VPN Status83
- VPN Wizard Setup Complete84
- Figure 31 VPN Wizard Setup Complete84
- Tutorial85
Chapter 4 Tutorial85
- Security Settings for VPN Traffic85
- Using NAT with Multiple Public IP Addresses92
- Using NAT with Multiple Game Players109
- Figure 68 Tutorial Example: Firewall Rule Summary109
- How to Manage the Zywall's Bandwidth110
- Registration117
Chapter 5 Registration117
- Myzyxel.com Overview117
  - Content Filtering Subscription Service117
- Registration118
- Figure 78 REGISTRATION118
- Table 20 REGISTRATION118
- Service119
- Figure 79 REGISTRATION: Registered Device119
- Figure 80 REGISTRATION > Service120
- Table 21 REGISTRATION > Service120
- Network121
- Part II: Network121
  - LAN Screens123
Chapter 6 LAN Screens123
- LAN, WAN and the Zywall123
- IP Address and Subnet Mask123
  - Figure 81 LAN and WAN123
  - Private IP Addresses124
- Dhcp125
  - IP Pool Setup125
- RIP Setup125
- Multicast125
- Wins126
- Lan126
- Figure 82 NETWORK > LAN127
- Table 22 NETWORK > LAN127
- LAN Static DHCP129
- Figure 83 NETWORK > LAN > Static DHCP129
- LAN IP Alias130
- Figure 84 Physical Network & Partitioned Logical Networks130
- Table 23 NETWORK > LAN > Static DHCP130
- Figure 85 NETWORK > LAN > IP Alias131
- Table 24 NETWORK > LAN > IP Alias131
- LAN Port Roles132
- Figure 86 NETWORK > LAN > Port Roles132
- Table 25 NETWORK > LAN > Port Roles132
- Figure 87 Port Roles Change Complete133
- Bridge Screens135
Chapter 7 Bridge Screens135
- Bridge Loop135
- Figure 88 Bridge Loop: Bridge Connected to Wired LAN135
- Spanning Tree Protocol (STP)136
- Bridge137
- Table 27 STP Port States137
- Figure 89 NETWORK > Bridge138
- Table 28 NETWORK > Bridge138
- Bridge Port Roles139
- Figure 90 NETWORK > Bridge > Port Roles140
- Figure 91 Port Roles Change Complete140
- Table 29 NETWORK > Bridge > Port Roles140
- WAN Screens141
Chapter 8 WAN Screens141
- WAN Overview141
- TCP/IP Priority (Metric)141
- WAN Route141
- Figure 92 NETWORK > WAN Route142
- Table 30 NETWORK > WAN Route142
- WAN IP Address Assignment143
- DNS Server Address Assignment143
- Table 31 Private IP Address Ranges143
- WAN MAC Address144
- Wan144
  - WAN Ethernet Encapsulation144
  - Table 32 Example of Network Properties for LAN Servers with Fixed IP Addresses144
  - Figure 93 NETWORK > WAN > WAN (Ethernet Encapsulation)145
  - Table 33 NETWORK > WAN > WAN (Ethernet Encapsulation)145
  - Pppoe Encapsulation147
  - Figure 94 NETWORK > WAN > WAN (Pppoe Encapsulation)148
  - Table 34 NETWORK > WAN > WAN (Pppoe Encapsulation)148
  - PPTP Encapsulation150
  - Figure 95 NETWORK > WAN > WAN (PPTP Encapsulation)151
  - Table 35 NETWORK > WAN > WAN (PPTP Encapsulation)151
- Traffic Redirect153
- Configuring Traffic Redirect154
- Figure 96 Traffic Redirect WAN Setup154
- Figure 97 Traffic Redirect LAN Setup154
- Figure 98 NETWORK > WAN > Traffic Redirect154
- Configuring Dial Backup155
- Table 36 NETWORK > WAN > Traffic Redirect155
- Figure 99 NETWORK > WAN > Dial Backup156
- Table 37 NETWORK > WAN > Dial Backup156
- Advanced Modem Setup158
  - AT Command Strings158
  - DTR Signal159
  - Response Strings159
- Configuring Advanced Modem Setup159
- Figure 100 NETWORK > WAN > Dial Backup > Edit159
- Table 38 NETWORK > WAN > Dial Backup > Edit160
- DMZ Screens161
Chapter 9 DMZ Screens161
- Dmz161
- Configuring DMZ161
- Figure 101 NETWORK > DMZ162
- Table 39 NETWORK > DMZ162
- DMZ Static DHCP164
- Figure 102 NETWORK > DMZ > Static DHCP164
- DMZ IP Alias165
- Table 40 NETWORK > DMZ > Static DHCP165
- Figure 103 NETWORK > DMZ > IP Alias166
- Table 41 NETWORK > DMZ > IP Alias166
- DMZ Public IP Address Example167
- DMZ Private and Public IP Address Example167
- Figure 104 DMZ Public Address Example167
- DMZ Port Roles168
- Figure 105 DMZ Private and Public Address Example168
- Figure 106 NETWORK > DMZ > Port Roles169
- Table 42 NETWORK > DMZ > Port Roles169
- Wireless LAN171
Chapter 10 Wireless LAN171
- Wireless LAN Introduction171
- Configuring WLAN171
- Figure 107 NETWORK > WLAN172
- Table 43 NETWORK > WLAN172
- WLAN Static DHCP174
- Figure 108 NETWORK > WLAN > Static DHCP174
- WLAN IP Alias175
- Table 44 NETWORK > WLAN > Static DHCP175
- Figure 109 NETWORK > WLAN > IP Alias176
- Table 45 NETWORK > WLAN > IP Alias176
- WLAN Port Roles177
- Figure 110 WLAN Port Role Example177
- Figure 111 NETWORK > WLAN > Port Roles178
- Figure 112 NETWORK > WLAN > Port Roles: Change Complete178
- Table 46 NETWORK > WLAN > Port Roles178
- Security179
- Part III: Security179
  - Firewall181
Chapter 11 Firewall181
- Firewall Overview181
- Figure 113 Default Firewall Action181
- Packet Direction Matrix182
- Figure 114 SECURITY > FIREWALL > Default Rule (Router Mode)182
- Table 47182
- Packet Direction Examples183
  - Figure 115 Default Block Traffic from WAN to DMZ Example183
  - To VPN Packet Direction184
  - Figure 116 from LAN to VPN Example185
  - Figure 117 Block DMZ to VPN Traffic by Default Example185
  - From VPN Packet Direction185
  - Figure 118 from VPN to LAN Example186
  - Figure 119 Block VPN to LAN Traffic by Default Example186
  - Figure 120 from VPN to VPN Example187
  - Figure 121 Block VPN to VPN Traffic by Default Example187
  - From VPN to VPN Packet Direction187
- Security Considerations188
- Firewall Rules Example188
- Figure 122 Blocking All LAN to WAN IRC Traffic Example188
- Figure 123 Limited LAN to WAN IRC Traffic Example189
- Table 48 Blocking All LAN to WAN IRC Traffic Example189
- Table 49 Limited LAN to WAN IRC Traffic Example189
- Asymmetrical Routes190
  - Asymmetrical Routes and IP Alias190
- Firewall Default Rule (Router Mode)191
- Figure 124 Using IP Alias to Solve the Triangle Route Problem191
- Figure 125 SECURITY > FIREWALL > Default Rule (Router Mode)191
- Table 50 SECURITY > FIREWALL > Default Rule (Router Mode)192
- Firewall Default Rule (Bridge Mode)193
- Figure 126 SECURITY > FIREWALL > Default Rule (Bridge Mode)193
- Firewall Rule Summary194
  - Table 51 SECURITY > FIREWALL > Default Rule (Bridge Mode)194
  - Figure 127 SECURITY > FIREWALL > Rule Summary195
  - Table 52 SECURITY > FIREWALL > Rule Summary195
  - Firewall Edit Rule196
  - Figure 128 SECURITY > FIREWALL > Rule Summary > Edit197
  - Table 53 SECURITY > FIREWALL > Rule Summary > Edit198
- Anti-Probing199
- Figure 129 SECURITY > FIREWALL > Anti-Probing199
- Firewall Thresholds200
  - Figure 130 Three-Way Handshake200
  - Table 54 SECURITY > FIREWALL > Anti-Probing200
  - Threshold Values201
- Threshold Screen201
- Figure 131 SECURITY > FIREWALL > Threshold201
- Table 55 SECURITY > FIREWALL > Threshold202
- Service203
  - Figure 132 SECURITY > FIREWALL > Service203
  - Table 56 SECURITY > FIREWALL > Service203
  - Figure 133 Firewall Edit Custom Service204
  - Firewall Edit Custom Service204
  - Table 57 SECURITY > FIREWALL > Service > Add204
- My Service Firewall Rule Example205
- Figure 134 My Service Firewall Rule Example: Service205
- Figure 135 My Service Firewall Rule Example: Edit Custom Service205
- Figure 136 My Service Firewall Rule Example: Rule Summary206
- Figure 137 My Service Firewall Rule Example: Rule Edit206
- Figure 138 My Service Firewall Rule Example: Rule Configuration208
- Figure 139 My Service Firewall Rule Example: Rule Summary209
Chapter 12 Content Filtering Screens211
- Content Filtering Overview211
- Content Filter General Screen211
- Figure 140 SECURITY > CONTENT FILTER > General212
- Table 58 SECURITY > CONTENT FILTER > General212
- Content Filtering with an External Database214
- Content Filter Categories214
- Figure 141 Content Filtering Lookup Procedure214
- Figure 142 SECURITY > CONTENT FILTER > Categories215
- Table 59 SECURITY > CONTENT FILTER > Categories216
- Content Filter Customization221
- Figure 143 SECURITY > CONTENT FILTER > Customization222
- Table 60 SECURITY > CONTENT FILTER > Customization222
- Customizing Keyword Blocking URL Checking223
- Content Filtering Cache224
- Figure 144 SECURITY > CONTENT FILTER > Cache225
- Table 61 SECURITY > CONTENT FILTER > Cache225
Chapter 13 Content Filtering Reports227
- Checking Content Filtering Activation227
- Viewing Content Filtering Reports227
- Figure 145 Myzyxel.com: Login228
- Figure 146 Myzyxel.com: Welcome228
- Figure 147 Myzyxel.com: Service Management229
- Figure 148 Blue Coat: Login229
- Figure 149 Content Filtering Reports Main Screen230
- Figure 150 Blue Coat: Report Home230
- Figure 151 Global Report Screen Example231
- Web Site Submission232
- Figure 152 Requested Urls Example232
- Figure 153 Web Page Review Process Screen233
- Ipsec VPN235
Chapter 14 Ipsec VPN235
- Ipsec VPN Overview235
  - Figure 154 VPN: Example235
  - Figure 155 VPN: IKE SA and Ipsec SA236
  - IKE SA Overview236
- VPN Rules (IKE)237
- Figure 156 Gateway and Network Policies237
- Figure 157 Ipsec Fields Summary237
- Figure 158 SECURITY > VPN > VPN Rules (IKE)238
- Table 62 SECURITY > VPN > VPN Rules (IKE)238
- IKE SA Setup239
  - IKE SA Proposal239
  - Figure 159 IKE SA: Main Negotiation Mode, Steps 1 - 2: IKE SA Proposal239
  - Figure 160 IKE SA: Main Negotiation Mode, Steps 3 - 4: DH Key Exchange240
  - Figure 161 IKE SA: Main Negotiation Mode, Steps 5 - 6: Authentication240
  - Table 63 VPN Example: Matching ID Type and Content241
  - Table 64 VPN Example: Mismatching ID Type and Content241
- Additional Ipsec VPN Topics243
  - SA Life Time243
  - Figure 162 VPN/NAT Example243
  - Ipsec High Availability244
  - Figure 163 Ipsec High Availability244
  - Encryption and Authentication Algorithms245
- VPN Rules (IKE) Gateway Policy Edit245
- Figure 164 SECURITY > VPN > VPN Rules (IKE) > Edit Gateway Policy246
- Table 65 SECURITY > VPN > VPN Rules (IKE) > Edit Gateway Policy247
- Ipsec SA Overview251
  - Local Network and Remote Network251
  - Virtual Address Mapping252
  - Figure 165 Local and Remote Network IP Address Overlap252
  - Active Protocol253
  - Encapsulation253
  - Figure 166 Virtual Mapping of Local and Remote Network IP Addresses253
  - Ipsec SA Proposal and Perfect Forward Secrecy254
  - Figure 167 VPN: Transport and Tunnel Mode Encapsulation254
- VPN Rules (IKE): Network Policy Edit255
- Figure 168 SECURITY > VPN > VPN Rules (IKE) > Edit Network Policy255
- Table 66 SECURITY > VPN > VPN Rules (IKE) > Edit Network Policy256
- VPN Rules (IKE): Network Policy Edit: Port Forwarding259
- Figure 169 SECURITY > VPN > VPN Rules (IKE) > Edit Network Policy > Port Forwarding260
- Table 67 SECURITY > VPN > VPN Rules (IKE) > Edit Network Policy > Port Forwarding260
- VPN Rules (IKE): Network Policy Move261
- Figure 170 SECURITY > VPN > VPN Rules (IKE) > Move Network Policy261
- Table 68 SECURITY > VPN > VPN Rules (IKE) > Move Network Policy261
- Ipsec SA Using Manual Keys262
  - Ipsec SA Proposal Using Manual Keys262
  - Authentication and the Security Parameter Index (SPI)262
- VPN Rules (Manual)262
- Figure 171 SECURITY > VPN > VPN Rules (Manual)263
- Table 69 SECURITY > VPN > VPN Rules (Manual)263
- VPN Rules (Manual): Edit264
- Figure 172 SECURITY > VPN > VPN Rules (Manual) > Edit264
- Table 70 SECURITY > VPN > VPN Rules (Manual) > Edit264
- VPN SA Monitor266
- VPN Global Setting267
- Figure 173 SECURITY > VPN > SA Monitor267
- Figure 174 SECURITY > VPN > Global Setting267
- Table 71 SECURITY > VPN > SA Monitor267
- Table 72 SECURITY > VPN > Global Setting268
- Telecommuter Vpn/Ipsec Examples269
  - Telecommuters Sharing One VPN Rule Example269
  - Telecommuters Using Unique VPN Rules Example269
  - Figure 175 Telecommuters Sharing One VPN Rule Example269
  - Table 73 Telecommuters Sharing One VPN Rule Example269
  - Figure 176 Telecommuters Using Unique VPN Rules Example270
  - Table 74 Telecommuters Using Unique VPN Rules Example270
- VPN and Remote Management271
- Hub-And-Spoke VPN271
  - Figure 177 VPN for Remote Management Example271
  - Figure 178 VPN Topologies272
  - Hub-And-Spoke VPN Example272
  - Figure 179 Hub-And-Spoke VPN Example273
  - Hub-And-Spoke Example VPN Rule Addresses273
  - Hub-And-Spoke VPN Requirements and Suggestions273
- Certificates275
Chapter 15 Certificates275
- Certificates Overview275
  - Advantages of Certificates276
- Self-Signed Certificates276
- Verifying a Certificate276
  - Checking the Fingerprint of a Certificate on Your Computer276
  - Figure 180 Certificates on Your Computer276
- Configuration Summary277
- Figure 181 Certificate Details277
- Figure 182 Certificate Configuration Overview277
- My Certificates278
- Figure 183 SECURITY > CERTIFICATES > My Certificates278
- Table 75 SECURITY > CERTIFICATES > My Certificates278
- My Certificate Details279
- Figure 184 SECURITY > CERTIFICATES > My Certificates > Details280
- Table 76 SECURITY > CERTIFICATES > My Certificates > Details280
- My Certificate Export282
  - Certificate File Export Formats282
- My Certificate Import283
  - Figure 185 SECURITY > CERTIFICATES > My Certificates > Export283
  - Table 77 SECURITY > CERTIFICATES > My Certificates > Export283
  - Certificate File Formats284
  - Figure 186 SECURITY > CERTIFICATES > My Certificates > Import284
  - Table 78 SECURITY > CERTIFICATES > My Certificates > Import284
- My Certificate Create285
- Figure 187 SECURITY > CERTIFICATES > My Certificates > Import: PKCS#12285
- Table 79 SECURITY > CERTIFICATES > My Certificates > Import: PKCS#12285
- Figure 188 SECURITY > CERTIFICATES > My Certificates > Create286
- Table 80 SECURITY > CERTIFICATES > My Certificates > Create286
- Trusted Cas288
- Figure 189 SECURITY > CERTIFICATES > Trusted Cas288
- Table 81 SECURITY > CERTIFICATES > Trusted Cas288
- Trusted CA Details289
- Figure 190 SECURITY > CERTIFICATES > Trusted Cas > Details290
- Table 82 SECURITY > CERTIFICATES > Trusted Cas > Details290
- Trusted CA Import292
- Figure 191 SECURITY > CERTIFICATES > Trusted Cas > Import292
- Table 83 SECURITY > CERTIFICATES > Trusted Cas Import292
- Trusted Remote Hosts293
- Figure 192 SECURITY > CERTIFICATES > Trusted Remote Hosts293
- Table 84 SECURITY > CERTIFICATES > Trusted Remote Hosts293
- Trusted Remote Host Certificate Details294
- Figure 193 SECURITY > CERTIFICATES > Trusted Remote Hosts > Details295
- Table 85 SECURITY > CERTIFICATES > Trusted Remote Hosts > Details295
- Trusted Remote Hosts Import297
- Figure 194 SECURITY > CERTIFICATES > Trusted Remote Hosts > Import297
- Table 86 SECURITY > CERTIFICATES > Trusted Remote Hosts > Import297
- Directory Servers298
- Figure 195 SECURITY > CERTIFICATES > Directory Servers298
- Table 87 SECURITY > CERTIFICATES > Directory Servers298
- Directory Server Add or Edit299
- Figure 196 SECURITY > CERTIFICATES > Directory Server > Add299
- Table 88 SECURITY > CERTIFICATES > Directory Server > Add299
Chapter 16 Authentication Server301
- Authentication Server Overview301
- Local User Database302
- Figure 197 SECURITY > AUTH SERVER > Local User Database303
- Table 89 SECURITY > AUTH SERVER > Local User Database303
- Radius304
- Figure 198 SECURITY > AUTH SERVER > RADIUS304
- Table 90 SECURITY > AUTH SERVER > RADIUS304
- Advanced307
- Part IV: Advanced307
Chapter 17 Network Address Translation (NAT)309
- NAT Overview309
- Using NAT313
  - SUA (Single User Account) Versus NAT313
- NAT Overview Screen313
- Table 92 NAT Mapping Types313
- Figure 202 ADVANCED > NAT > NAT Overview314
- Table 93 ADVANCED > NAT > NAT Overview314
- NAT Address Mapping315
- Port Forwarding317
- Port Forwarding Screen320
- Figure 207 ADVANCED > NAT > Port Forwarding320
- Port Triggering321
- Table 96 ADVANCED > NAT > Port Forwarding321
- Figure 208 Trigger Port Forwarding Process: Example322
- Figure 209 ADVANCED > NAT > Port Triggering322
- Table 97 ADVANCED > NAT > Port Triggering323
- Static Route325
Chapter 18 Static Route325
- IP Static Route325
- Bandwidth Management329
Chapter 19 Bandwidth Management329
- Bandwidth Management Overview329
- Bandwidth Classes and Filters329
- Proportional Bandwidth Allocation330
- Application-Based Bandwidth Management330
- Subnet-Based Bandwidth Management330
- Application and Subnet-Based Bandwidth Management330
- Figure 213 Subnet-Based Bandwidth Management Example330
- Table 100 Application and Subnet-Based Bandwidth Management Example330
- Scheduler331
  - Priority-Based Scheduler331
  - Fairness-Based Scheduler331
  - Maximize Bandwidth Usage331
  - Reserving Bandwidth for Non-Bandwidth Class Traffic331
  - Maximize Bandwidth Usage Example332
  - Table 101 Maximize Bandwidth Usage Example332
  - Table 102 Priority-Based Allotment of Unused and Unbudgeted Bandwidth Example332
- Bandwidth Borrowing333
  - Bandwidth Borrowing Example333
  - Table 103 Fairness-Based Allotment of Unused and Unbudgeted Bandwidth Example333
- Maximize Bandwidth Usage with Bandwidth Borrowing334
- Over Allotment of Bandwidth334
- Table 104 Bandwidth Borrowing Example334
- Table 105 over Allotment of Bandwidth Example334
- Configuring Summary335
- Figure 214 ADVANCED > BW MGMT > Summary335
- Table 106 ADVANCED > BW MGMT > Summary335
- Configuring Class Setup336
  - Figure 215 ADVANCED > BW MGMT > Class Setup336
  - Bandwidth Manager Class Configuration337
  - Table 107 ADVANCED > BW MGMT > Class Setup337
  - Figure 216 ADVANCED > BW MGMT > Class Setup > Add Sub-Class338
  - Table 108 ADVANCED > BW MGMT > Class Setup > Add Sub-Class338
  - Bandwidth Management Statistics340
  - Figure 217 ADVANCED > BW MGMT > Class Setup > Statistics340
  - Table 109 Services and Port Numbers340
- Bandwidth Manager Monitor341
- Figure 218 ADVANCED > BW MGMT > Monitor341
- Table 110 ADVANCED > BW MGMT > Class Setup > Statistics341
- Table 111 ADVANCED > BW MGMT > Monitor342
- Dns343
Chapter 20 DNS343
- DNS Overview343
- DNS Server Address Assignment343
- DNS Servers343
- Address Record344
  - DNS Wildcard344
- Name Server Record344
  - Private DNS Server344
- System Screen345
- DNS Cache349
- Configure DNS Cache349
- Figure 223 ADVANCED > DNS > Cache349
- Table 115 ADVANCED > DNS > Cache349
- Configuring DNS DHCP350
- Figure 224 ADVANCED > DNS > DHCP350
- Dynamic DNS351
  - Table 116 ADVANCED > DNS > DHCP351
  - DYNDNS Wildcard352
- Configuring Dynamic DNS352
- Figure 225 ADVANCED > DNS > DDNS352
- Table 117 ADVANCED > DNS > DDNS352
- Remote Management355
Chapter 21 Remote Management355
- Remote Management Overview355
  - Figure 226 Secure and Insecure Remote Management from the WAN355
  - Remote Management Limitations356
  - System Timeout356
- WWW (HTTP and HTTPS)356
- WWW Configuration357
- Figure 227 HTTPS Implementation357
- Figure 228 ADVANCED > REMOTE MGMT > WWW357
- HTTPS Example358
  - Table 118 ADVANCED > REMOTE MGMT > WWW358
  - Figure 229 Security Alert Dialog Box (Internet Explorer)359
  - Internet Explorer Warning Messages359
  - Netscape Navigator Warning Messages359
  - Avoiding the Browser Warning Messages360
  - Figure 230 Security Certificate 1 (Netscape)360
  - Figure 231 Security Certificate 2 (Netscape)360
  - Figure 232 Example: Lock Denoting a Secure Connection361
  - Login Screen361
  - Figure 233 Replace Certificate362
  - Figure 234 Device-Specific Certificate362
  - Figure 235 Common Zywall Certificate362
- Ssh363
- How SSH Works363
- Figure 236 SSH Communication over the WAN Example363
- Figure 237 How SSH Works363
- SSH Implementation on the Zywall364
  - Requirements for Using SSH364
- Configuring SSH364
- Secure Telnet Using SSH Examples365
  - Example 1: Microsoft Windows365
  - Figure 238 ADVANCED > REMOTE MGMT > SSH365
  - Table 119 ADVANCED > REMOTE MGMT > SSH365
  - Example 2: Linux366
  - Figure 239 SSH Example 1: Store Host Key366
  - Figure 240 SSH Example 2: Test366
- Secure FTP Using SSH Example367
- Figure 241 SSH Example 2: Log in367
- Figure 242 Secure FTP: Firmware Upload Example367
- Telnet368
- Configuring TELNET368
- Figure 243 ADVANCED > REMOTE MGMT > TELNET368
- Table 120 ADVANCED > REMOTE MGMT > TELNET368
- Ftp369
- Figure 244 ADVANCED > REMOTE MGMT > FTP369
- Table 121 ADVANCED > REMOTE MGMT > FTP369
- Snmp370
  - Figure 245 SNMP Management Model370
  - Remote Management: Snmp371
  - SNMP Traps371
  - Supported Mibs371
  - Table 122 SNMP Traps371
  - Figure 246 ADVANCED > REMOTE MGMT > SNMP372
  - Table 123 ADVANCED > REMOTE MGMT > SNMP372
- Dns373
- Introducing Vantage CNM373
- Figure 247 ADVANCED > REMOTE MGMT > DNS373
- Table 124 ADVANCED > REMOTE MGMT > DNS373
- Configuring CNM374
- Figure 248 ADVANCED > REMOTE MGMT > CNM374
- Table 125 ADVANCED > REMOTE MGMT > CNM374
- Upnp377
Chapter 22 Upnp377
- Universal Plug and Play Overview377
- Configuring Upnp378
- Figure 249 ADVANCED > Upnp378
- Table 126 ADVANCED > Upnp378
- Displaying Upnp Port Mapping379
- Figure 250 ADVANCED > Upnp > Ports379
- Table 127 ADVANCED > Upnp > Ports379
- Installing Upnp in Windows Example380
  - Installing Upnp in Windows Me381
  - Installing Upnp in Windows XP382
- Using Upnp in Windows XP Example382
  - Auto-Discover Your Upnp-Enabled Network Device383
  - Web Configurator Easy Access384
- ALG Screen387
Chapter 23 ALG Screen387
- ALG Introduction387
  - ALG and NAT387
  - ALG and the Firewall387
- Ftp388
- 388388
- Rtp388
  - ALG Details388
  - Figure 251 H.323 ALG Example388
- Sip389
- ALG Screen390
- Figure 253 ADVANCED > ALG390
- Table 128 ADVANCED > ALG391
- Logs and Maintenance393
- Part V: Logs and Maintenance393
  - Logs Screens395
Chapter 24 Logs Screens395
- Configuring View Log395
- Figure 254 LOGS > View Log395
- Log Description Example396
  - Table 129 LOGS > View Log396
  - Table 130 Log Description Example396
  - About the Certificate Not Trusted Log397
  - Figure 255 Myzyxel.com: Download Center397
- Configuring Log Settings398
- Figure 256 Myzyxel.com: Certificate Download398
- Figure 257 LOGS > Log Settings399
- Table 131 LOGS > Log Settings400
- Configuring Reports401
  - Figure 258 LOGS > Reports402
  - Table 132 LOGS > Reports402
  - Figure 259 LOGS > Reports: Web Site Hits Example403
  - Table 133 LOGS > Reports: Web Site Hits Report403
  - Viewing Host IP Address403
  - Viewing Web Site Hits403
  - Figure 260 LOGS > Reports: Host IP Address Example404
  - Table 134 LOGS > Reports: Host IP Address404
  - Viewing Protocol/Port404
  - Figure 261 LOGS > Reports: Protocol/Port Example405
  - Table 135 LOGS > Reports: Protocol/ Port405
  - System Reports Specifications406
- Log Descriptions406
- Table 136 Report Specifications406
- Table 137 System Maintenance Logs406
- Table 138 System Error Logs408
- Table 139 Access Control Logs408
- Table 140 TCP Reset Logs409
- Table 141 Packet Filter Logs409
- Table 142 ICMP Logs409
- Table 143 CDR Logs410
- Table 144 PPP Logs410
- Table 145 Upnp Logs410
- Table 146 Content Filtering Logs411
- Table 147 Attack Logs411
- Table 148 Remote Management Logs413
- Table 149 Ipsec Logs413
- Table 150 IKE Logs414
- Table 151 PKI Logs417
- Table 152 Certificate Path Verification Failure Reason Codes418
- Table 153 ACL Setting Notes418
- Table 154 ICMP Notes419
- Table 155 IDP Logs420
- Table 156 AV Logs421
- Table 157 as Logs422
- Syslog Logs424
- Table 158 Syslog Logs424
- Table 159 RFC-2408 ISAKMP Payload Types425
- Maintenance427
Chapter 25 Maintenance427
- Maintenance Overview427
- General Setup and System Name427
  - General Setup427
- Configuring Password428
- Figure 262 MAINTENANCE > General Setup428
- Table 160 MAINTENANCE > General Setup428
- Time and Date429
- Figure 263 MAINTENANCE > Password429
- Table 161 MAINTENANCE > Password429
- Figure 264 MAINTENANCE > Time and Date430
- Table 162 MAINTENANCE > Time and Date430
- Pre-Defined NTP Time Server Pools432
  - Resetting the Time432
  - Time Server Synchronization432
  - Figure 265 Synchronization in Process432
- Introduction to Transparent Bridging433
- Figure 266 Synchronization Is Successful433
- Figure 267 Synchronization Fail433
- Table 163 MAC-Address-To-Port Mapping Table433
- Transparent Firewalls434
- Configuring Device Mode (Router)434
- Figure 268 MAINTENANCE > Device Mode (Router Mode)435
- Table 164 MAINTENANCE > Device Mode (Router Mode)435
- Configuring Device Mode (Bridge)436
- Figure 269 MAINTENANCE > Device Mode (Bridge Mode)436
- Table 165 MAINTENANCE > Device Mode (Bridge Mode)436
- F/W Upload Screen437
- Figure 270 MAINTENANCE > Firmware Upload438
- Figure 271 Firmware Upload in Process438
- Table 166 MAINTENANCE > Firmware Upload438
- Backup and Restore439
  - Figure 272 Network Temporarily Disconnected439
  - Figure 273 Firmware Upload Error439
  - Backup Configuration440
  - Figure 274 MAINTENANCE > Backup and Restore440
  - Restore Configuration440
  - Table 167 Restore Configuration440
  - Back to Factory Defaults441
  - Figure 275 Configuration Upload Successful441
  - Figure 276 Network Temporarily Disconnected441
  - Figure 277 Configuration Upload Error441
- Restart Screen442
- Figure 278 Reset Warning Message442
- Figure 279 MAINTENANCE > Restart442
- SMT and Troubleshooting443
- Part VI: SMT and Troubleshooting443
  - Introducing the SMT445
Chapter 26 Introducing the SMT445
- Introduction to the SMT445
- Accessing the SMT Via the Console Port445
  - Initial Screen445
  - Entering the Password446
- Navigating the SMT Interface446
- Changing the System Password450
- Figure 284 Menu 23: System Password450
- Resetting the Zywall451
Chapter 27 SMT Menu 1 - General Setup453
- Introduction to General Setup453
- Configuring General Setup453
Chapter 28 WAN and Dial Backup Setup459
- Introduction to WAN and Dial Backup Setup459
- WAN Setup459
- Figure 290 MAC Address Cloning in WAN Setup459
- Dial Backup460
- Configuring Dial Backup in Menu 2460
- Table 176 MAC Address Cloning in WAN Setup460
- Advanced WAN Setup461
- Figure 291 Menu 2: Dial Backup Setup461
- Table 177 Menu 2: Dial Backup Setup461
- Figure 292 Menu 2.1: Advanced WAN Setup462
- Table 178 Advanced WAN Port Setup: at Commands Fields462
- Remote Node Profile (Backup ISP)463
- Figure 293 Menu 11.2: Remote Node Profile (Backup ISP)463
- Table 179 Advanced WAN Port Setup: Call Control Parameters463
- Table 180 Menu 11.3: Remote Node Profile (Backup ISP)464
- Editing TCP/IP Options465
- Figure 294 Menu 11.2.2: Remote Node Network Layer Options465
- Table 181 Menu 11.2.2: Remote Node Network Layer Options465
- Editing Login Script466
- Remote Node Filter467
- Figure 295 Menu 11.2.3: Remote Node Script467
- Table 182 Menu 11.2.3: Remote Node Script467
- Figure 296 Menu 11.2.4: Remote Node Filter468
- LAN Setup469
Chapter 29 LAN Setup469
- Introduction to LAN Setup469
- Accessing the LAN Menus469
- LAN Port Filter Setup469
- Figure 297 Menu 3: LAN Setup469
- TCP/IP and DHCP Ethernet Setup Menu470
- Internet Access475
Chapter 30 Internet Access475
- Introduction to Internet Access Setup475
- Ethernet Encapsulation475
- Figure 302 Menu 4: Internet Access Setup (Ethernet)475
- Table 186 Menu 4: Internet Access Setup (Ethernet)476
- Configuring the PPTP Client477
- Configuring the Pppoe Client477
- Figure 303 Internet Access Setup (PPTP)477
- Table 187 New Fields in Menu 4 (PPTP) Screen477
- Basic Setup Complete478
- Figure 304 Internet Access Setup (Pppoe)478
- Table 188 New Fields in Menu 4 (Pppoe) Screen478
- DMZ Setup479
Chapter 31 DMZ Setup479
- Configuring DMZ Setup479
- DMZ Port Filter Setup479
- Figure 305 Menu 5: DMZ Setup479
- Figure 306 Menu 5.1: DMZ Port Filter Setup479
- TCP/IP Setup480
- Wireless Setup483
Chapter 32 Wireless Setup483
- TCP/IP Setup483
- Remote Node Setup487
Chapter 33 Remote Node Setup487
- Introduction to Remote Node Setup487
- Remote Node Profile Setup487
- Edit IP492
- Figure 316 Menu 11.1: Remote Node Profile for PPTP Encapsulation492
- Table 191 Menu 11.1: Remote Node Profile for PPTP Encapsulation492
- Figure 317 Menu 11.1.2: Remote Node Network Layer Options for Ethernet Encapsulation493
- Table 192 Remote Node Network Layer Options Menu Fields493
- Remote Node Filter494
- Figure 318 Menu 11.1.4: Remote Node Filter (Ethernet Encapsulation)494
- Traffic Redirect495
- Figure 319 Menu 11.1.4: Remote Node Filter (Pppoe or PPTP Encapsulation)495
- Figure 320 Menu 11.1.5: Traffic Redirect Setup495
- Table 193 Menu 11.1.5: Traffic Redirect Setup495
- IP Static Route Setup497
Chapter 34 IP Static Route Setup497
- Figure 321 Menu 12: IP Static Route Setup497
- Figure 322 Menu 12. 1: Edit IP Static Route498
- Table 194 Menu 12. 1: Edit IP Static Route498
Chapter 35 Network Address Translation (NAT)499
- Using NAT499
- NAT Setup501
- Configuring a Server Behind NAT506
- Figure 330 Menu 15.2: NAT Server Sets506
- Figure 331 15.2.1: NAT Server Configuration506
- Table 199 15.2.1: NAT Server Configuration507
- General NAT Examples508
- Trigger Port Forwarding515
Chapter 36 Introducing the Zywall Firewall517
- Using Zywall SMT Menus517
- Filter Configuration519
Chapter 37 Filter Configuration519
- Introduction to Filters519
- Configuring a Filter Set522
- Example Filter528
- Figure 357 Telnet Filter Example528
- Figure 358 Example Filter: Menu 21.1.3.1529
- Figure 359 Example Filter Rules Summary: Menu 21.1.3529
- Filter Types and NAT530
- Firewall Versus Filters530
- Applying a Filter531
- SNMP Configuration535
Chapter 38 SNMP Configuration535
- Figure 364 Menu 22: SNMP Configuration535
Chapter 39 System Information & Diagnosis537
- Introduction to System Status537
- System Status537
- Figure 365 Menu 24: System Maintenance537
- Figure 366 Menu 24.1: System Maintenance: Status538
- Table 207 System Maintenance: Status Menu Fields538
- System Information and Console Port Speed539
- Log and Trace540
- Diagnostic545
Chapter 40 Firmware and Configuration File Maintenance549
- Introduction549
- Filename Conventions549
- Backup Configuration550
- Restore Configuration555
- Uploading Firmware and Configuration Files557
Chapter 41 System Maintenance Menus 8 to 10563
- Command Interpreter Mode563
- Call Control Support565
- Time and Date Setting567
- Figure 400 Menu 24: System Maintenance567
- Figure 401 Menu 24.10 System Maintenance: Time and Date Setting568
- Table 217 Menu 24.10 System Maintenance: Time and Date Setting568
- Remote Management571
Chapter 42 Remote Management571
- Figure 402 Menu 24.11 - Remote Management Control572
Chapter 43 Call Scheduling575
- Introduction to Call Scheduling575
- Figure 403 Schedule Setup575
- Figure 404 Schedule Set Setup576
- Table 219 Schedule Set Setup576
- Figure 405 Applying Schedule Set(S) to a Remote Node (Pppoe)577
- Figure 406 Applying Schedule Set(S) to a Remote Node (PPTP)578
- Troubleshooting579
Chapter 44 Troubleshooting579
- Power, Hardware Connections, and Leds579
- Zywall Access and Login580
- Internet Access582
- Wireless Router/Ap Troubleshooting584
- Upnp584
- Appendices and Index587
- Part VII: Appendices and Index587
Appendix A Product Specifications589
- Table 220 Hardware Specifications589
- Table 221 Firmware Specifications589
- Figure 407 Console/Dial Backup Cable DB-9 End Pin Layout591
- Table 222 Feature Specifications591
- Table 223 Performance591
- Table 224 Console Cable Pin Assignments592
- Table 225 Console Cable Pin Assignments592
- Table 226 Ethernet Cable Pin Assignments592
Appendix B Setting up Your Computer's IP Address593
- Figure 408 Windows 95/98/Me: Network: Configuration594
- Figure 409 Windows 95/98/Me: TCP/IP Properties: IP Address595
- Figure 410 Windows 95/98/Me: TCP/IP Properties: DNS Configuration596
- Figure 411 Windows XP: Start Menu597
- Figure 412 Windows XP: Control Panel597
- Figure 413 Windows XP: Control Panel: Network Connections: Properties598
- Figure 414 Windows XP: Local Area Connection Properties598
- Figure 415 Windows XP: Internet Protocol (TCP/IP) Properties599
- Figure 416 Windows XP: Advanced TCP/IP Properties600
- Figure 417 Windows XP: Internet Protocol (TCP/IP) Properties601
- Figure 418 Macintosh os 8/9: Apple Menu602
- Figure 419 Macintosh os 8/9: TCP/IP602
- Figure 420 Macintosh os X: Apple Menu603
- Figure 421 Macintosh os X: Network604
- Figure 422 Red hat 9.0: KDE: Network Configuration: Devices605
- Figure 423 Red hat 9.0: KDE: Ethernet Device: General605
- Figure 424 Red hat 9.0: KDE: Network Configuration: DNS606
- Figure 425 Red hat 9.0: KDE: Network Configuration: Activate606
- Using Configuration Files606
- Figure 426 Red hat 9.0: Dynamic IP Address Setting in Ifconfig-Eth0607
- Figure 427 Red hat 9.0: Static IP Address Setting in Ifconfig-Eth0607
- Figure 428 Red hat 9.0: DNS Settings in Resolv.conf607
- Figure 429 Red hat 9.0: Restart Ethernet Card607
- Figure 430 Red hat 9.0: Checking TCP/IP Properties608
Appendix C Pop-Up Windows, Javascripts and Java Permissions609
- Figure 431 Pop-Up Blocker609
- Figure 432 Internet Options610
- Figure 433 Internet Options611
- Figure 434 Pop-Up Blocker Settings611
- Figure 435 Internet Options612
- Figure 436 Security Settings - Java Scripting613
- Figure 437 Security Settings - Java613
- Figure 438 Java (Sun)614
Appendix D IP Addresses and Subnetting615
- Introduction to Ip Addresses615
- Figure 439 Network Number and Host ID616
- Table 227616
- Table 228 Subnet Masks617
- Table 229 Maximum Host Numbers617
- Table 230 Alternative Subnet Mask Notation617
- Figure 440 Subnetting Example: before Subnetting618
- Figure 441 Subnetting Example: after Subnetting619
- Table 231 Subnet 1619
- Table 232 Subnet 2620
- Table 233 Subnet 3620
- Table 234 Subnet 4620
- Table 235 Eight Subnets620
- Table 236 24-Bit Network Number Subnet Planning621
- Table 237 16-Bit Network Number Subnet Planning621
Appendix E623
Appendix E Common Services623
- Table 238 Commonly Used Services623
Appendix F Importing Certificates627
- Figure 442 Security Certificate627
- Figure 443 Login Screen628
- Figure 444 Certificate General Information before Import628
- Figure 445 Certificate Import Wizard 1629
- Figure 446 Certificate Import Wizard 2629
- Figure 447 Certificate Import Wizard 3630
- Figure 448 Root Certificate Store630
- Figure 449 Certificate General Information after Import631
- Figure 450 Zywall Trusted CA Screen632
- Figure 451 CA Certificate Example633
- Figure 452 Personal Certificate Import Wizard 1634
- Figure 453 Personal Certificate Import Wizard 2634
- Figure 454 Personal Certificate Import Wizard 3635
- Figure 455 Personal Certificate Import Wizard 4635
- Figure 456 Personal Certificate Import Wizard 5636
- Figure 457 Personal Certificate Import Wizard 6636
- Figure 458 Access the Zywall Via HTTPS636
- Figure 459 SSL Client Authentication637
- Figure 460 Zywall Secure Login Screen637
Appendix G Command Interpreter639
- Command Examples639
- Figure 461 Displaying Log Categories Example640
- Figure 462 Displaying Log Parameters Example640
- Log Command Example641
- Figure 463 Routing Command Example642
- Figure 464 Backup Gateway643
- Figure 465 Managing the Bandwidth of an Ipsec SA644
- Figure 466 Managing the Bandwidth of an IKE SA644
- Figure 467 Routing Command Example645
Appendix H Firewall Commands647
- Table 239 Firewall Commands647
Appendix I Netbios Filter Commands653
- Display Netbios Filter Settings653
- Table 240 Netbios Filter Default Settings654
Appendix J Certificates Commands655
- Table 241 Certificates Commands655
Appendix K Brute-Force Password Guessing Protection659
- Table 242 Brute-Force Password Guessing Protection Commands659
Appendix L Boot Commands661
- Figure 468 Option to Enter Debug Mode661
Appendix M Legal Information663
- Zyxel Limited Warranty664
Appendix N Customer Support667
- Index671

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