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Chapter Nine: Advanced Installations IP filters 128
IP filters
IP filtering provides you with the means to implement customized security, usage, and cost control measures.
How filtering works
Filters are defined in a stack. Up to 8 filters can be combined together to obtain sophisticated results. Data
cascades through the filter stack as follows:
Each profile has its own filter stack. However, note that once any filter is activated, all incoming and
outgoing data passes through the filter stack. By default, the DIVA LAN ISDN Modem defines three filters.
This means, unless you turn these filters off, all incoming and outgoing data passes through the filter stack.
Note
More sophisticated filters can be defined using the command line interface. See Chapter Ten for more
information.
Filter #2
Filter #1
Data that matches
Data that matches
Drop
Drop
Forward
Forward
Apply filter
conditions
Apply filter
conditions
Action
Action
Data that does
not match
Data that does
not match
Filter #8
Output from filter stack
Input to filter stack
Data that matches
Drop
Forward
Apply filter
conditions
Action
Data that does
not match
No
Ye s
Are any filters
active?
Bypass filter stack
Send all data into filter stack
Discard
Discard
Discard
Discard
- DIVA LAN ISDN Modem 1
- User’s Guide 1
- Table of Contents 3
- Chapter Three: 4
- Chapter Four: 4
- Chapter Five: 4
- Chapter Six: 5
- Chapter Seven: 5
- Chapter Eight: 5
- Chapter Nine: 6
- Chapter Ten: 6
- Appendix A: 7
- Appendix B: 7
- Appendix C: 7
- Appendix D: 8
- Introduction 9
- Internet 10
- Connecting more computers 12
- Total network security 12
- Bandwidth on-demand 13
- Advanced diagnostics 13
- Unsupported configurations 13
- Summary of features 14
- Contacting customer services 15
- Getting Started 16
- 1. Installation overview 17
- 2. Prepare for installation 18
- Important ISDN concepts 20
- ISDN channel usage 20
- Multilink PPP 21
- Multilink PPP + BACP 21
- Multilink PPP + AO/DI 22
- 4. Order an ISDN Line 23
- Gather X.25 information 24
- Gather V.120 information 24
- V.120 scripting 25
- Power Supply 26
- FaxPhone 26
- ISDN Wall Outlet 26
- To install Modem Monitor 28
- Starting Modem Monitor 40
- Start menu options 41
- Properties dialog box 42
- Utilities dialog box 43
- Options dialog box 44
- Status Viewer 45
- Chapter Four 46
- Saving configuration settings 48
- Getting help 48
- General settings 49
- Connection profile settings 49
- Editing the ISP profile 50
- Editing LAN settings 52
- Viewing status information 54
- Obtaining statistics 55
- Eicon\DIVA LAN ISDN Modem\ELM 56
- Resetting to factory defaults 57
- Minimizing ISDN Charges 58
- The Cost Control page 59
- Data call thresholds 60
- ISDN billing intervals 60
- Configuring BACP 61
- Configuring AO/DI 63
- X.25 on the D-channel 65
- Setting ISDN active intervals 67
- Spoofing NetBIOS services 68
- Data compression 69
- Manual dialing 70
- Restricting analog calls 71
- Data over voice 72
- Traffic filtering 73
- Security 74
- Security features 75
- System password 76
- Automatic log out 77
- Network address translation 78
- Remote management 81
- To enable remote management 82
- Incoming data calls 83
- Call authentication 87
- Delay before host calls back 89
- Timeout waiting for callback 89
- To set up callback 89
- Custom security features 91
- Setting up the Phone Ports 92
- Call bumping 95
- Supplementary services 97
- Call Waiting 98
- VoiceMail 98
- Caller ID 98
- Three-way Conference Calling 98
- Call Transfer 99
- Feature Key values 99
- Chapter Eight 100
- Overview 101
- 1. Gather information 102
- 103 103
- 104 104
- 105 105
- 106 106
- NetBIOS name resolution 107
- Timeouts 107
- Dynamic IP addressing 107
- What’s next? 108
- Advanced Installations 109
- Connection retries 110
- 111 111
- Using Modem Monitor 112
- Manual installation 112
- 113 113
- 115 115
- To create a VPN 116
- Connecting to the VPN 117
- 118 118
- Defining routes 119
- IP routes 120
- 126 126
- 127 127
- IP filters 128
- Default filters 129
- To define a filter 129
- 130 130
- Action Direction 131
- Source /Destination 131
- Location 131
- ProtocolAddress 131
- IP filtering examples 132
- 133 133
- Blocking web surfing 134
- 135 135
- Making a V.120 connection 136
- 137 137
- SecurID support 138
- 139 139
- Other Configuration Tools 140
- Configuration options 141
- Web interface 142
- TFTP interface 143
- Loading new firmware via TFTP 144
- DTMF interface 145
- Command line interface (CLI) 146
- 147 147
- About configuration context 148
- Connection profiles 148
- Default profiles 148
- Command line reference 148
- Loading firmware with the CLI 148
- 149 149
- TCP/IP Configuration 150
- Installing TCP/IP 151
- Configuring TCP/IP 151
- 152 152
- 153 153
- 154 154
- Configuring TCP/IP on an iMac 155
- Technical Information 156
- 157 157
- E1, E2, E3, E4 158
- 159 159
- 160 160
- Termination 161
- Command Line Reference 162
- Notational Conventions 163
- Commands 164
- ENABLE AODI AREACODE 165
- DISABLE AODI AREACODE 165
- SET AODI TXBUFFER bytes 165
- Callback 166
- Call screening 167
- Call thresholds 168
- 169 169
- 170 170
- DELETE DHCP STATICMAP ip 171
- SHOW DHCP STATICMAP 171
- ENABLE DHCP STATICMAP ip 171
- DISABLE DHCP STATICMAP ip 171
- SET DNS DOMAIN domain 172
- ENABLE DNS RELAY 172
- DISABLE DNS RELAY 172
- SHOW DNS CONFIGURATION 172
- Ethernet 173
- 174 174
- 175 175
- 176 176
- 178 178
- 179 179
- 180 180
- IP routing 181
- IP various 182
- 183 183
- 184 184
- 185 185
- 186 186
- ISDN Access Time 187
- STOP LAPD TRACE 188
- Logging and Mail Trace 189
- SHOW MLPPP CONFIGURATION 190
- 191 191
- 192 192
- ENABLE PHONE SERVICES channel 193
- SET PHONE COUNTRY country 193
- SHOW PHONE COUNTRY 193
- SHOW PHONE CONFIGURATION 193
- 194 194
- 195 195
- SHOW PPP STATISTICS 196
- SHOW PPP STATUS 196
- STOP PPP TRACE [port] 196
- Profiles 197
- STOP Q931 TRACE 198
- 199 199
- DELETE RIP REJECT ipaddr 200
- SHOW RIP REJECT 200
- 201 201
- SHOW TCP STATISTICS 202
- STOP TCP TRACE 202
- ENABLE TFTP SERVER 203
- DISABLE TFTP SERVER 203
- Time Protocol 204
- SHOW UDP STATISTICS 205
- STOP UDP TRACE 205
- 206 206
- SET V120 IDLETIME IdleDelay 207
- SHOW V120 CONFIGURATION 207
- STOP V120 TRACE 207
- V.120 Scripting 208
- 209 209
- 210 210
- Regulatory Information 211
- 212 212
- 213 213
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