Lancom 821 ADSL/ISDN Manual 

Contents

Lancom 821 ADSL/ISDN Manual  Manual pdf 18 page image

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN Chapter 1: Introduction18ENaccess to the Internet is required on either side of the network inter-connection. Conventional via ISDNWithout VPN, a LAN to LAN interconnection can alternatively be real-ized via ISDN. In this case, an intelligent line management andsophisticated filter mechanisms keeps connection costs low. Remote access to the company network (via VPN or ISDN)The work of many office workers in modern organizations is less and lessdependent on any definite location—the most important factor here isunimpaired access to shared and freely available information.Remote Access Service (RAS) is the magic word here. Employees workingfrom home or field staff can dial into the company network via VPN orISDN. When working with remote access via ISDN, the router protects thecompany network: the call back function only grants access to known andregistered users.1.5 What can your LANCOM do?The following table contains a direct comparison of the properties and func-tions of your devices with other models:VPN gatewaysVPN tunnel via theInternetLANCOM 821ADSLLANCOM 1621ADSLLANCOM 1711DSLApplicationsInternet accessLAN to LAN coupling via VPN