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̈ Chapter 6: Security LANCOM Reference Manual LCOS 3.50
59
Security
You have a choice of the following:
̈ all: Calls are accepted from any remote station.
̈ by number: Only calls from those remote stations whose Calling Line Iden-
tification number (CLIP) is entered in the number list are accepted.
̈ by approved number: Only calls from those remote stations whose Calling
Line Identification number (CLIP) is entered in the name list and whose
number is approved by the Central Office.
It is an obvious requirement for identification that the corresponding informa-
tion is sent by the caller.
Verification of name and password
In the case of PPP, a user name (and in conjunction with PAP, CHAP or MS-
CHAP, a password) is sent to the remote station during connection establish-
ment. When a computer dials into the LANCOM, the communications soft-
ware, for example Windows Dial-Up Network, prompts the user for the user
name and password to be transferred.
If the router establishes the connection itself, for instance, to an ISP, it is using
the user name and password from the PPP list. If no user name is listed there,
the device name is used in its place.
The PPP list can be found as follows:
In addition, the PPP protocol also permits the caller to require an authentica-
tion from the remote station. The caller then requests a user or device name
and password from the remote station.
Of course you will not need to use the PAP, CHAP or MS CHAP security
procedures if you are using the LANCOM to dial up an Internet service
provider yourself, for example.You will probably not be able to per-
suade the ISP to respond to a request for a password...
Configuration tool Run
LANconfig Communication ̈ Protocols ̈ PPP list
WEBconfig Expert Configuration ̈ Setup ̈ WAN-module ̈ PPP-list
Terminal/Telnet
/setup/WAN-module/PPP-list