Lancom Systems 7111 VPN - Manual (Page 37)

LANCOM 7111 VPN – LANCOM 8011 VPN
̈ Chapter 3: Basic configuration
37
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ቦ Connect charge protection can limit the cost of DSL and ISDN connections
to a predetermined amount if desired. Confirm your choice with Apply.
If your devices does not feature an ISDN port, you may now close the
setup wizard. Otherwise the wizard will prompt you to configure the ISDN
port now. Make your choice and confirm it with Apply.
ቧ
Enter the ISDN subscriber numbers (as MSNs, i.e. without area code) on
which the router will accept calls. Multiple numbers are separated by
semicolons. If you do not specify any MSNs, the router will answer all
incoming calls on the ISDN connection.
In addition, you can enter a trunk code for dialling into ISDN. Finally, you
should specify whether or not the tariff information is to be transmitted at
your ISDN connection. Confirm your entries with Apply.
ቨ
The basic setup wizard reports that all the necessary information has been
provided. You can end the wizard with Go on.
3.4 TCP/IP settings to workstation PCs
The correct addressing of all devices within a LAN is extremely important for
TCP/IP networks. In addition, all computers must know the IP addresses of two
central points in the LAN:
̈
Default gateway – receives all packets that are not addressed to comput-
ers within the local network.
̈
DNS server – translates network names (www.lancom.de) or names of
computers (www.lancom.de) to actual IP addresses.
The LANCOM router can perform the functions of both a default gateway and
a DNS server. In addition, as a DHCP server it can also automatically assign
valid IP addresses to all of the computers in the LAN.
The correct TCP/IP configuration of the PCs in the LAN depends on the method
used to assign IP addresses within the LAN:
̈
IP address assignment via the LANCOM router (default)
In this operating mode the LANCOM router not only assigns IP addresses
to the PCs in the LAN, it also uses DHCP to specify its own IP address as
that of the default gateway and DNS server. The PCs must therefore be
configured so that they automatically obtain their own IP address and the
IP addresses of the standard gateway and DNS server (via DHCP).