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5
5. Firewall Protection
This chapter describes how to use the firewall features of the wireless VPN firewall to protect
your network. The chapter contains the following sections:
• About Firewall Protection
• Overview of Rules to Block or Allow Specific Kinds of T
raffic
• Configure LAN WAN Rules
• Configure DMZ WAN Rules
• Configure LAN DMZ Rules
• Examples of Firewall Rules
• Configure Other Firewall Features
• Services, Bandwidth Profiles, and QoS Profiles
• Configure Content Filtering
• Set a Schedule to Block or Allow Specific Traffic
• Enable Source MAC Filtering
• Set Up IP/MAC Bindings
• Configure Port Triggering
• Configure Universal Plug and Play
About Firewall Protection
A firewall protects one network (the trusted network, such as your LAN) from another (the
untrusted network, such as the Internet), while allowing communication between the two.
You can further segment keyword blocking to certain known groups. For information about
how to set up LAN groups, see Manage IPv4 Groups and Hosts (IPv4 LAN Groups) on
page 67.
For IPv4, a firewall incorporates the functions of a Network Address Translation (NAT) router,
protects the trusted network from hacker intrusions or attacks, and controls the types of
traffic that can flow between the Internet, DMZ, and LAN. Unlike simple NAT routers, a
firewall uses a process called stateful packet inspection to protect your network from attacks
and intrusions. NAT performs a limited stateful inspection in that it considers whether the
- ProSafe Wireless-N 8-Port 1
- Gigabit VPN Firewall 1
- Technical Support 2
- Trademarks 2
- Statement of Conditions 2
- Revision History 2
- Contents 4
- Chapter 3 LAN Configuration 5
- Chapter 11 Troubleshooting 8
- Introduction 10
- Key Features and Capabilities 11
- A Powerful, True Firewall 12
- Security Features 13
- Extensive Protocol Support 13
- Package Contents 15
- Hardware Features 15
- Figure 1 16
- Table 1. LED descriptions 16
- Rear Panel 18
- Figure 3 19
- Figure 4 21
- Figure 7 23
- Figure 8 23
- Internet and Broadband 25
- Settings 25
- Complete these four tasks: 26
- Configure the IPv4 WAN Mode 27
- Figure 9 28
- Figure 10 29
- Figure 11 30
- Figure 12 31
- Figure 13 32
- Figure 14 34
- Configure Dynamic DNS 35
- To configure DDNS: 36
- Figure 16 36
- Figure 17 36
- Connection 39
- Figure 19 40
- Figure 20 41
- Figure 21 42
- Figure 22 43
- Figure 23 44
- Figure 24 46
- Figure 25 48
- Figure 26 48
- To edit an ISATAP tunnel: 48
- Figure 27 49
- To configure SIIT: 50
- Figure 28 50
- Figure 29 51
- What to Do Next 53
- Port-Based VLANs 55
- VLAN DHCP Options 57
- DHCP Server 58
- DHCP Relay 58
- DNS Proxy 58
- Configure a VLAN Profile 59
- Figure 32 60
- To edit a VLAN profile: 64
- Default VLAN 65
- Figure 34 66
- Manage the Network Database 68
- Figure 36 71
- Figure 37 72
- Manage the IPv6 LAN 73
- Stateful DHCPv6 Server 74
- Configure the IPv6 LAN 75
- IPv6 LAN Address Pools 77
- Figure 39 78
- To add an IPv6 prefix: 79
- Figure 40 79
- To edit a prefix: 79
- Figure 41 81
- Figure 42 83
- DMZ Port for IPv4 Traffic 86
- Figure 44 87
- DMZ Port for IPv6 Traffic 89
- Figure 45 90
- IPv6 DMZ Address Pools 92
- Figure 47 95
- Figure 48 97
- Manage Static IPv4 Routing 98
- LAN Configuration 100
- Figure 51 101
- Manage Static IPv6 Routing 103
- Figure 52 104
- Figure 53 104
- Figure 54 108
- Figure 55 111
- Wireless Security Profiles 112
- To add a wireless profile: 115
- Figure 56 115
- Figure 57 116
- To edit a wireless profile: 120
- Figure 58 121
- Figure 59 122
- Figure 60 124
- Figure 61 125
- 4. Click Apply to save 126
- Firewall Protection 128
- Administrator Tips 129
- Order of Precedence for Rules 137
- Configure LAN WAN Rules 138
- Figure 64 139
- IPv4 LAN WAN Outbound Rules 140
- Figure 65 141
- IPv6 LAN WAN Outbound Rules 142
- IPv6 LAN WAN Inbound Rules 144
- Configure DMZ WAN Rules 145
- Figure 69 146
- Figure 70 147
- Figure 71 148
- Figure 72 149
- Figure 73 151
- Figure 74 152
- Configure LAN DMZ Rules 153
- Figure 76 154
- Figure 77 155
- Figure 78 156
- Figure 79 157
- Figure 80 158
- Examples of Firewall Rules 159
- Addresses 160
- Figure 83 162
- Figure 84 163
- Single LAN User 164
- Site on the Internet 165
- Attack Checks 166
- IPv4 Attack Checks 167
- IPv6 Attack Checks 169
- Set Limits for IPv4 Sessions 170
- To enable ALG for SIP: 171
- Figure 91 171
- Add Customized Services 172
- Figure 92 173
- To edit a service: 174
- Figure 93 174
- Create Bandwidth Profiles 175
- Profile screen displays: 176
- Configure Content Filtering 178
- Figure 96 180
- To set a schedule: 182
- Figure 97 182
- Enable Source MAC Filtering 183
- Set Up IP/MAC Bindings 184
- IPv4/MAC Bindings 185
- Figure 99 186
- IPv6/MAC Bindings 187
- Figure 101 188
- To edit an IP/MAC binding: 189
- Figure 102 189
- Configure Port Triggering 190
- Figure 103 191
- Figure 104 192
- To configure UPnP: 192
- Figure 105 192
- Virtual Private Networking 194
- Figure 106 195
- Figure 107 196
- Figure 108 197
- Figure 109 198
- Figure 110 199
- Figure 111 199
- Figure 112 200
- Figure 113 201
- Figure 114 202
- Figure 115 203
- Figure 116 203
- Figure 117 204
- 3. Click App 205
- Figure 118 206
- Figure 119 207
- Figure 120 208
- Figure 121 208
- Figure 122 209
- Figure 123 209
- Figure 124 211
- Figure 125 212
- Figure 126 212
- Figure 127 213
- 6. Click the 214
- Figure 129 216
- Figure 130 217
- Information 218
- Figure 132 219
- Figure 133 219
- Figure 134 219
- Figure 135 219
- Figure 136 220
- Figure 137 220
- Figure 138 221
- Manage IPSec VPN Policies 222
- IKE Policies Screen 223
- Figure 140 225
- To edit an IKE policy: 229
- Manage VPN Policies 230
- Figure 141 231
- To edit a VPN policy: 238
- User Database Configuration 240
- Figure 144 241
- Mode Config Operation 243
- Firewall 244
- Figure 146 245
- Figure 147 248
- Table 52 on page 226 249
- Figure 148 252
- Figure 149 253
- Figure 150 253
- Figure 151 254
- Figure 152 256
- Figure 153 257
- Figure 154 258
- Figure 155 258
- Figure 156 259
- Configure Keep-Alives 260
- Configure Dead Peer Detection 261
- Figure 158 262
- Configure the L2TP Server 263
- Figure 160 264
- View the Active L2TP Users 265
- Using SSL Connections 266
- Create the Portal Layout 268
- Figure 164 270
- To edit a portal layout: 272
- Add Servers and Port Numbers 273
- Add a New Host Name 274
- Configure the SSL VPN Client 275
- Add New Network Resources 279
- Figure 168 280
- To edit network resources: 280
- Figure 169 281
- View Policies 283
- Figure 170 284
- To add an SSL VPN policy: 284
- To edit an SSL VPN policy: 288
- Figure 175 290
- Figure 176 291
- Figure 177 291
- Figure 178 292
- To display the SSL VPN log: 292
- Figure 179 293
- VPN Certificates 294
- Configure Domains 296
- Figure 181 297
- Configure Groups 300
- Create Groups 301
- Figure 183 302
- Configure User Accounts 303
- To create a user account: 304
- Figure 184 304
- 4. Click App 305
- Set User Login Policies 306
- Figure 187 307
- Figure 188 309
- Figure 189 310
- Figure 190 312
- VPN Certificates Screen 314
- Manage VPN CA Certificates 315
- Figure 192 316
- Figure 194 319
- To delete one or more SCRs: 320
- To delete one or more CRLs: 321
- Network and System Management 322
- Features That Reduce Traffic 323
- Content Filtering 324
- Source MAC Filtering 325
- Port Triggering 327
- DMZ Port 327
- Exposed Hosts 327
- VPN and L2TP Tunnels 327
- Set QoS Priorities 328
- Assign Bandwidth Profiles 328
- System Management 329
- Figure 197 330
- About Remote Access 334
- tracert wireless VPN 335
- To access the CLI: 335
- Figure 200 336
- Figure 201 337
- Figure 202 338
- Figure 203 339
- Manage the Configuration File 340
- Back Up Settings 341
- Restore Settings 341
- Update the Firmware 343
- Figure 205 344
- Enable the WAN Traffic Meter 346
- Figure 206 347
- Figure 207 349
- Figure 208 350
- Configure Gateway 1 at Site 1 354
- Configure Gateway 2 at Site 2 355
- View Status Screens 356
- Figure 209 357
- Router Statistics Screen 358
- Detailed Status Screen 359
- Figure 211 360
- Tunnel Status Screen 363
- Figure 213 364
- Figure 214 364
- View the VPN Logs 365
- Figure 217 366
- Figure 218 366
- View the WAN Port Status 367
- Figure 220 368
- IPv6 WAN Port Status 369
- View the Attached Devices 370
- View the DHCP Log 371
- Figure 224 372
- Diagnostics Utilities 373
- Figure 225 374
- Figure 226 374
- Send a Ping Packet 375
- Trace a Route 375
- Look Up a DNS Address 375
- Display the Routing Tables 376
- Capture Packets in Real Time 376
- Troubleshooting 378
- Basic Functioning 379
- LAN or WAN Port LEDs Not On 380
- Figure 228 384
- Figure 229 385
- Figure 230 386
- Figure 231 388
- Specifications 390
- Two-Factor Authentication 400
- Figure 232 402
- Figure 233 402
- Figure 234 403
- NETGEAR Wired Products 404
- Additional Copyrights 406
- FCC Information to User 410
- FCC Declaration of Conformity 410
- FCC Caution 410
- Numerics 412
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