What Does Vpn Offer - Lancom 1811 User Manual

LANCOM 1811 Wireless DSL – LANCOM 1821+ Wireless ADSL
Chapter 1: Introduction
ADSL can operate over both ISDN- and analog telephone lines (POTS – Plain
Old Telephone Service). Devices with an integrated modem are supplied in
two versions. Information about the supported telephone system is to be
found on the type designation on the underside of the device. The device
name is marked on the label along with a suffix which indicates the supported
telephone system:
Suffix
'Annex A'
'Annex A'
Annex A-type devices are exclusively to be operated at ADSL-over-POTS con-
nections. Annex B-type devices are exclusively to be operated at ADSL-over-
ISDN connections. Your network operator will be able to inform you of the ver-
sion you need. These devices cannot be altered or upgraded to a system other
than that for which it is equipped.
There are even ADSL-over-ISDN connections which are not combined with an
ISDN connection, but with a standard analog telephone connection instead.
In Germany, for instance, all T-DSL connections from Deutsche Telekom AG are
implemented as ADSL-over-ISDN connections.
1.2

What does VPN offer?

A VPN (Virtual Private Network) can be used to set up secure data communi-
cations over the Internet.

The following structure results when using the Internet instead of direct con-
nections:
12
have a 10/100Base-Tx Ethernet connector via PPPeE, PPTP or simple
Ethernet (with or without DHCP).
LANCOM 1821+ Wireless ADSL models can use this option as well by
configuring the first LAN port as a WAN interface.
Supported telephone system
ADSL-over-POTS
ADSL-over-ISDN
The models LANCOM 1811 Wireless DSL and LANCOM 1821+
Wireless ADSL are factory equipped to support VPN with 5 active tun-
nels. With the additional LANCOM VPN Option, VPN support can be
extended to 25 active tunnels (incl. activated hardware accelerator).