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14-34 User’s Reference Guide
Example Network
Example Filters
Example 1
Incoming packet has the source address of 200.1.1.28
Less Than Or Equal Any port less than or equal to the port defined
Equal Matches only the port defined
Greater Than or Equal Matches the port or any port greater
Greater Than Matches anything greater than the port defined.
Filter Rule: 200.1.1.0 (Source IP Network Address)
255.255.255.128 (Source IP Mask)
Forward = No (What happens on match)
IP Address Binary Representation
200.1.1.28 00011100 (Source address in incoming IP packet)
AND
255.255.255.128 10000000 (Perform the logical AND)
00000000 (Logical AND result)
Netopia
Internet
IP: 200.1.1.??
DATA
Incoming
Packet Filter
- R2121 Dual Analog Router 1
- Part I: Getting Started 3
- Part III: Appendixes 9
- Contents ix 11
- User’s Reference Guide 20
- Overview 21
- Features and capabilities 21
- How to use this guide 22
- Find a location 23
- What you need 23
- 2 Telco 24
- 1 Ethernet 24
- Ethernet 26
- Telco 2 Telco 1 26
- Phone 1Phone 2 26
- Netopia R2121 LED front panel 28
- 2-8 User’s Reference Guide 30
- Before running SmartStart 31
- Easy option 34
- Advanced option 38
- Sharing the Connection 39
- SmartView overview 47
- Navigating SmartView 48
- Connection Profiles page 49
- Event History pages 49
- 4-4 User’s Reference Guide 50
- Device Event History page 50
- WAN Event History page 50
- 4-6 User’s Reference Guide 52
- 10Base-T 56
- Adding a third modem 57
- 5-8 User’s Reference Guide 60
- Configuring Telnet software 65
- Easy Setup console screens 67
- Beginning Easy Setup 69
- Easy Setup profile 69
- IP Easy Setup 70
- Easy Setup Security 72
- Deleting connection profiles 79
- System Configuration screens 80
- System Configuration features 81
- Network Protocols Setup 83
- Filter Sets (Firewalls) 83
- IP Address Serving 83
- Date and Time 83
- Console Configuration 84
- Security 85
- Upgrade Feature Set 85
- Installing the Syslog client 86
- 8-16 User’s Reference Guide 88
- 9-2 User’s Reference Guide 90
- (Wide Area Network) Setup 90
- Netopia R2121 back panel 92
- Scheduled connections 95
- ■ “IP setup” on page 10-6 105
- IP setup 110
- IP subnets 114
- Static routes 116
- IP address serving 120
- DHCP NetBIOS Options 122
- 10-20 User’s Reference Guide 124
- 10-22 User’s Reference Guide 126
- IPX Features 127
- IPX Definitions 127
- IPX address 128
- NetBIOS 129
- IPX Spoofing 129
- IPX setup 129
- IPX in the answer profile 131
- 11-6 User’s Reference Guide 132
- IPX routing tables 133
- 11-8 User’s Reference Guide 134
- AppleTalk networks 135
- AppleTalk protocol 135
- Routers and seeding 137
- Installing AppleTalk 138
- Configuring AppleTalk 140
- EtherTalk Setup 140
- LocalTalk Setup 141
- AURP setup 142
- 12-12 User’s Reference Guide 146
- Quick View status overview 147
- General Status 148
- Current Status 149
- Status lights 149
- Statistics & Logs 150
- General Statistics 150
- Event Histories 151
- Routing Tables 154
- Served IP Addresses 157
- Reset All Leases 158
- Release BootP Leases 158
- System Information 159
- The SNMP Setup screen 160
- SNMP traps 161
- Suggested security measures 163
- User accounts 164
- Dial-in Console Access 165
- Caution! 166
- How filter sets work 167
- How individual filters work 169
- Design guidelines 173
- Adding a filter set 175
- Viewing filter sets 179
- Modifying filter sets 180
- Deleting a filter set 180
- A sample IP filter set 180
- Output filter 181
- IPX filters 184
- IPX packet filters 185
- IPX packet filter sets 186
- IPX SAP filters 188
- IPX SAP filter sets 190
- Firewall tutorial 192
- General Firewall Terms 192
- Basic IP Packet Components 192
- Basic Protocol Types 192
- Firewall design rules 193
- Filter Basics 195
- Example Filters 196
- Token Security Authentication 199
- Securing network environments 199
- Using the SecurID token card 199
- 14-42 User’s Reference Guide 204
- Trace Route 208
- Telnet client 209
- Secure Authentication Monitor 210
- Factory defaults 211
- Updating firmware 212
- Downloading configuration files 213
- Uploading configuration files 214
- Restarting the system 217
- 15-14 User’s Reference Guide 218
- Configuration problems 221
- SmartStart Troubleshooting 222
- Console connection problems 222
- Network problems 222
- Power outages 223
- Technical support 223
- How to reach us 223
- SmartIP™ 227
- What is IP? 229
- About IP addressing 229
- Subnets and subnet masks 230
- Distributing IP addresses 233
- Configuration 235
- Using address serving 236
- Nested IP subnets 239
- Internet 239
- Broadcasts 241
- Packet header types 241
- C-14 User’s Reference Guide 242
- Network Configuration 243
- Background 243
- Exported services 247
- Important notes 248
- Binary Conversion Table E-1 251
- E-2 User’s Reference Guide 252
- F-4 User’s Reference Guide 256
- HD-15 DB-25 257
- Description 258
- Power requirements 258
- Environment 258
- Software and protocols 259
- Agency approvals 259
- Regulatory notices 259
- Important safety instructions 261
- G-6 User’s Reference Guide 262
- Trunk Line 265
- Class A, B, and C networks 268
- hard seeding, seeding 269
- 8 User’s Reference Guide 272
- see IP addresses 275
- 2 User’s Reference Guide 280
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