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Configuring and Troubleshooting Bay Dial VPN Services
Glossary-4
308606-14.00 Rev 00
mobile node
A dial-up host or router that changes its point of attachment from one network
or subnetwork to another, and performs the functions as defined in the IP
Mobility Draft Standard Specification. In the Dial VPN environment, the
mobile node functions are implemented as a proxy agent within the Remote
Annex so that the behavior of a mobile node is simulated for each remote node
that has established a connection to the Remote Annex.
NAS
The gateway serves as a network access server (NAS); that is, it provides a
service to the dial-in user, such as PPP or Telnet. The NAS is a client of the
RADIUS server on the home/corporate network. The client is responsible for
passing user information to the designated RADIUS server.
NCP
Network Control Protocol. Software that manages the traffic between
workstations and the host. In a LAN, it resides in the server, and manages
requests from the workstation.
network access server
See NAS.
PAP
Password Authentication Protocol. A method of establishing security on PPP
links where the caller must provide a password in order to establish the link.
Point-to-Point
Protocol (PPP)
Protocol between the terminal and the router. A communications protocol that
provides dial-up access to the Internet. PPP encapsulates common
network-layer protocol specialized Network Control packets; for example, IP
over PPP (IPCP) and IPX over PPP (IPXCP).
PSTN
Public-switched telephone network.
RADIUS
Remote Authentication Dial-in User Service. A system of distributed
(client-server) security that secures remote access to networks and network
services against unauthorized access.
RADIUS client
A program that resides on the gateway and sends authentication requests to
the RADIUS server and acts on responses sent back by the server.
RADIUS server
An authentication server that is installed on a host computer on the corporate
“home” network. All user remote authentication and network service access
information resides on this server.
Remote Access
Server (RAS)
A device that lets a remote node connect to it via a Packet-Switched
Telephone Network (PSTN) or an Integrated Services Digital Network
(ISDN) line. In a Dial VPN network, the Remote Annex performs the remote
access function.
- Configuring and 1
- Troubleshooting Bay Dial 1
- VPN Services 1
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 308606-14.00 Rev 00 10
- Before You Begin 15
- Text Conventions 16
- Acronyms 17
- Hard-Copy Technical Manuals 19
- How to Get Help 20
- Chapter 1 21
- Tunneling Overview 21
- What Is Tunneling? 22
- Layer 3 Tunneling 24
- Layer 2 Tunneling 24
- DVS0012A 26
- Dial VPN Network Components 27
- Where to Go Next 34
- Chapter 2 35
- Dial VPN Layer 2 Tunneling 35
- L2TP Packet Encapsulation 38
- Security in an L2TP Network 41
- RADIUS User Authentication 43
- RADIUS Accounting 44
- L2TP IP Interface Addresses 44
- Starting an L2TP Session 45
- Examples of L2TP Tunnels 46
- Chapter 3 49
- Dial VPN Layer 3 Tunneling 49
- How Tunnel Management Works 53
- How the TMS Database Works 54
- How DHCP Works 56
- Assigning Addresses 59
- DVS0018A 60
- Using Secondary Gateways 61
- Using a Backup Gateway 63
- Using Load Distribution 63
- Starting the Connection 64
- Chapter 4 73
- <acp_or_RADIUS> 75
- stats -o command 76
- <called_number> 77
- Configuring Active RIP 79
- Chapter 5 81
- Tunnel Management Commands 84
- Command Arguments 86
- 0013ABC0:001234560000 93
- Chapter 6 95
- Using RADIUS Accounting 98
- RADIUS server 100
- (continued) 104
- (continued) 105
- Chapter 7 111
- Configuring Layer 3 Gateways 111
- <slot_number> 113
- Gateway Accounting Messages 115
- Chapter 8 117
- Enabling L2TP 129
- field, which by 135
- Creating a Superscope 137
- Chapter 9 139
- Managing a Dial VPN Network 139
- Appendix A 141
- Planning Worksheet 141
- For Each Destination Site 143
- For Each Remote Node 144
- Appendix B 145
- Syslog Messages 145
- TMS Syslog Messages 147
- Appendix C 153
- Troubleshooting 153
- Preventing Problems 154
- Preparing to Troubleshoot 155
- Troubleshooting Worksheet 156
- Troubleshooting Routers 158
- Cable Guide 158
- Caution: Avoid using the 161
- Caution: 162
- Managing 171
- Remote Access Concentrators 171
- Using Command Line Interfaces 171
- Managing Remote 173
- Access Concentrators Using 173
- Command Line Interfaces 173
- DVS0005A 175
- Troubleshooting the LAC 177
- Troubleshooting the LNS 178
- Appendix D 185
- Tips and Techniques 185
- Configuration 188
- Glossary 193
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