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LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN
̈ Chapter 1: Introduction
19
EN
LAN to LAN coupling via ISDN
RAS server (via VPN)
RAS server (via ISDN)
IP router
IPX router (via ISDN), e.g. for coupling of Novell networks or dialling into
Novell networks
NetBIOS proxy for coupling of Microsoft peer-to-peer networks via ISDN
DHCP and DNS server (for LAN and WAN)
N:N mapping for coupling networks using the same IP address ranges from LCOS 5.0
LANCAPI server for the operating with office applications as fax or answer-
ing machine via ISDN interface
WAN connection
Connection for DSL or cable modem
Integrated ADSL modem
ISDN S
0
bus in multi device-mode or in point-to-point mode with automatic
D-channel protocol identification. Supports static and dynamic channel
bundling per MLPPP and BACP as well as Stac data compression (Hi/fn)
Port for external modem, analogue or GSM (requires LANCOM modem
adapter kit; from LCOS 5.0)
LAN connection
Integrated 4-port auto-mode-switch (10/100 Mbps) with private mode for
4 individual Fast Ethernet LAN ports, switchable separately, e.g. as LAN
switch or separate DMZ ports, auto crossover.
Security functions
IPSec encryption in external software (VPN client)
IPSec encryption in internal software
IPSec encryption in hardware (optional, activation via the VPN-25-Option)
IP masquerading (NAT, PAT) to hide all workstations of the LAN behind one
common public IP address.
Stateful Inspection Firewall
LANCOM 821
ADSL
LANCOM 1621
ADSL
LANCOM 1711
DSL