Lancom Systems 7111 VPN, 8011 VPN manual General information, The ISDN calling line identity CLI

LANCOM 7111 VPN – LANCOM 8011 VPN

Chapter 6: Providing dial- up access

6.1.1General information

The following entries are required to set up a RAS connection. The first column indicates whether the information is required for a VPN and/or an ISDN con- nection. .

Coupling	Entry
VPN + ISDN	User name
		EN
VPN + ISDN	Password
VPN	Shared secret for encryption
VPN	Hide local stations for access to remote network (Extranet VPN)?
ISDN	Incoming number of remote station
ISDN	TCP/IP routing for access to remote network
ISDN	IPX routing for access to remote network
VPN + ISDN	IP addresses for the dial-up PCs: static or dynamic by address range (IP
	address pool)
VPN + ISDN	NetBIOS routing for access to remote network?
VPN + ISDN	Name of remote workgroup (NetBIOS only)

Notes to the individual values:

User name and password: Users authenticate themselves with this information when dialling in.

Incoming number: The LANCOM router uses the optional ISDN caller ID as an additional user authentication. This security function should not be used when users dial in from differing locations.

Please refer to chapter ’Linking two networks’ →page 42 for advice about the other values required for the installation of a RAS access.

The ISDN calling line identity (CLI)

The ISDN caller ID—also known as CLI (Calling Line Identity)—this is the telephone number of the caller which is transmitted to the participant receiving the call. As a rule, it consists of the country and area codes and an MSN.

The CLI is well-suited for authentication purposes for two reasons: it is very difficult to manip- ulate, and the number is transferred free of charge via the ISDN control channel (D-channel).

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