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Defining Filters and Firewalls
Display unwanted dial-out packets
6-28 Preliminary January 30, 1998 Pipeline User’s Guide
Out filter 04...Generic...Length=3
Out filter 04...Generic...Mask=ffffff0000000000
Out filter 04...Generic...Value=0404040000000000
Out filter 04...Generic...Compare=Equals
Out filter 04...Generic...More=No
Out filter 05...Generic...Forward=yes
Out filter 05...Generic...Offset=0
Out filter 05...Generic...Length=0
Out filter 05...Generic...Mask=0000000000000000
Out filter 05...Generic...Value=0000000000000000
Out filter 05...Generic...Compare=Equals
Out filter 05...Generic...More=No
Display unwanted dial-out packets
A diagnostic option captures and displays packets that cause the Pipeline to dial
out. You can then use the information to write data or call filters to prevent the
packets from bringing up unwanted connections.
When packets are not captured
If a dial out is initiated for any of the following reasons, the wdDialout option
does not capture a packet:
• Dial out caused by the Ctrl-D user command
• Dial out caused by callback security
• Dial out on nailed channels
• Dial out caused by NAT (Network Access Translation) acquiring an IP
address
• Dial out initiated for IP over X.25, when the X.25 internet profile changes to
active and there is data waiting for X.25 to bring up the connection
• Dial out caused by IGMP (Internet Group Management Protocol) multicast
forwarding
• Dial out to acquire a DNS address during PPP negotiations
- Pipeline User’s Guide 1
- Ascend Customer Service 3
- Contents 5
- About This Guide 16
- Documentation conventions 17
- Manual set 19
- Configuring WAN Connections 20
- Link encapsulation 21
- Nailed groups 22
- How calls are initiated 23
- How calls are answered 24
- Data compression options 25
- The Answer profile 26
- Connection profiles 28
- Session options 30
- Telco options 31
- Encapsulation options 32
- MP, MPP, and MP+ connections 34
- Monitoring DBA 37
- Example MP+ configuration 38
- BACP connections 40
- Nailed MPP connections 42
- Inverse ARP for Frame Relay 49
- Configuring IP Routing 51
- Host-to-router connections 52
- Router-to-router connections 53
- Subnet mask notation 54
- RIP-v2 and RIP-v1 routing 59
- Interface-based routing 60
- Managing the routing table 64
- Static and dynamic routes 66
- Configuring static routes 66
- Configuring the default route 69
- If you are using RIP-v1 71
- Route preferences 74
- Viewing the routing table 75
- Fields in the routing table 77
- 10.8.9.10 82
- 10.2.3.1 82
- Host with ISDN 82
- Example router connection 83
- Foreign and home agents 87
- IP Address Management 90
- IP Adrs=10.2.3.1 92
- Gateway=10.0.0.17 93
- Active=Yes 93
- Dest=0.0.0.0/0 93
- Metric=1 93
- Private=Yes 93
- Enabling DNS on the Pipeline 96
- Generating UDP checksums 96
- BOOTP Relay 98
- Configuring DHCP services 100
- DHCP services 101
- Setting up a DHCP server 103
- Setting up DHCP spoofing 103
- Local DNS host address table 106
- Creating the local DNS table 108
- Editing the local DNS table 109
- Translation table size 113
- Multiple-address NAT 114
- NAT for Frame Relay 117
- Well-known ports 121
- Configuring IPX Routing 122
- Extensions to standard IPX 124
- Required settings 126
- IPX Route profiles 127
- IPX SAP filters 128
- Dial Query 129
- Watchdog spoofing 130
- Automatic SPX spoofing 130
- IPX in the Answer profile 132
- IPX SAP proxy servers 135
- Managing IPX SAP filters 142
- Applying an IPX SAP filter 144
- Ethernet 146
- About IPX bridging 156
- Enabling bridging 158
- Managing the bridge table 159
- Static bridge-table entries 160
- 10.2.3.4/24 168
- 10.2.3.75/24 168
- 10.2.3.8/24 168
- 10.2.3.100/24 168
- Introduction to filters 170
- Predefined call filters 174
- Overview of Filter profiles 175
- Defining IP filter conditions 179
- Example filters 181
- NetWare Call filter 190
- IP Call filter 195
- AppleTalk Call filter 195
- When packets are not captured 197
- Displaying packets 198
- Example 2 199
- Example 3 200
- Example 4 201
- Example 5 202
- Secure Access Firewalls 203
- Filter persistence 205
- Setting Up Pipeline Security 207
- Recommended security measures 208
- Assigning a Telnet password 211
- Pipeline Security profiles 213
- Default security level 214
- Security profile passwords 214
- Security privileges 214
- Using the Full Access profile 215
- Connection security 217
- Authentication protocols 218
- Callback security 221
- Expect callback support 222
- Using security cards 223
- Requesting PAP-TOKEN mode 225
- Requesting CACHE-TOKEN 226
- Setting system values 233
- Syslog messages 236
- Using DO commands 239
- Resetting the Pipeline 244
- Terminal server commands 246
- IpAddress: ttt.ttt.ttt.ttt 250
- Pipeline 75 Voice Features 251
- Ordering voice features 253
- Caller ID supported 256
- Using Call Waiting 256
- Using Call Hold 257
- Call conferencing 258
- EAZ Terminal ID for Germany 260
- IDSL Implementations 261
- Making voice calls over IDSL 264
- APP Server utility 265
- C:\NOVELL\LSL.COM 273
- C:\NOVELL\XXXODI.COM 273
- C:\ASCEND\APPSRVDS.EXE 273
- C:\ASCEND\ 274
- Troubleshooting 278
- General problems 279
- 100 terminal 281
- ISDN BRI interface problems 284
- Bridge/router problems 286
- Check the installation 287
- Configuration problems 288
- Upgrading system software 291
- Network Interfaces 292
- The upgrade procedure 293
- Activating a Security Profile 294
- Before you begin 296
- Glossary 304
- Broadcast packets 305
- VT-100 terminal emulation 307
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