LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721+ VPN
Chapter 3: Basic configuration
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Setup Wizards
The setup Wizards allow quick and easy configuration of the most common
device settings. Select the Wizard and enter the appropriate data on the fol-
lowing screens.
The settings are not stored in the device until inputs are confirmed on
the last screen of the Wizard.
3.4
TCP/IP settings for PC workstations
It is extremely important to assign the correct addresses to all of the devices
in the LAN. Also, all of these computers must know the IP addresses of two
central stations in the LAN:
Standard gateway – receives all packets which are not addressed to com-
puters in the local network
DNS server – translates network and computer names into their actual IP
addresses.
The LANCOM VPN Router can fulfill the functions of a standard gateway and
also of a DNS server. It can also operate as a DHCP server, which automatically
assigns IP addresses to all of the computers in the LAN.
The correct TCP/IP configuration of a PC in the LAN depends essentially on the
method used for assigning IP addresses in the LAN:
IP address allocation by a LANCOM
In this operating mode, a LANCOM uses DHCP to allocate not only an IP
address to each PC in the LAN and WLAN (for devices with a radio mod-
ule), but it also communicates its own IP address as the standard gateway
and DNS server. For this reason, the PCs have to be set up to automatically
retrieve their own IP address and those of the standard gateway and DNS
server via DHCP.
