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LANCOM Reference Manual LCOS 3.50 ̈ Chapter 14: Virtual Private Networks—VPN
296
Virtual Private Networks—
VPN
following example illustrates a typical application that is often used in
practice.
The principal components and features of these applications:
̈ The coupling of networks, for example between headquarters and a
branch office
̈ Connecting external locations without fixed IP addresses via VPN router
̈ Connecting home offices without fixed IPs via ISDN or analog modems
̈ Connecting to Voice-over-IP telephone exchanges
̈ Connecting mobile users, for example when using public WLAN access
14.2.2 Advantages of LANCOM VPN
LANCOM VPN solutions have numerous clear advantages over other VPN
applications:
̈ When connecting remote stations with dynamic IP addresses (e.g.
branch-office networks), LANCOM VPN can work with the “Main Mode”
instead of the inferior “Aggressive Mode”. This mode offers a highly
secure solution that is also easy to implement.
Internet
VPN
gateway
Voice-over-IP
telecommunicat
ions system
Voice-over-IP
telecommunic
ISDN
ISDN
VPN gateway
Access via public WLAN
(hotspot)
Headquarters
Branch_office
Branch office
Home office
Mobile user
Server in
the DMZ