Lancom 821+, Руководство пользователя

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LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
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Section 'TCP/IP settings to workstation PCs' will describe the settings
required for the individual workstations in the LAN.
3.3 Instructions for WEBconfig
Device settings can be configured from any Web browser. WEBconfig config-
uration software is an integral component of the LANCOM. A Web browser is
all that is required to access WEBconfig. WEBconfig offers similar Setup Wiz-
ards to LANconfig and hence provides the perfect conditions for easy config-
uration of the LANCOM – although, unlike LANconfig, it runs under any
operating system with a Web browser.
To carry out a configuration with WEBconfig, you need to know how to con-
tact the device. Device behavior and accessibility for configuration via a Web
browser depend on whether the DHCP server and DNS server are active in the
LAN already, and whether these two server processes share the assignment in
the LAN of IP addresses to symbolic names.
Following power-on, unconfigured LANCOM devices first check whether a
DHCP server is already active in the LAN. Depending on the situation, the
device can either enable its own DHCP server or enable DHCP client mode. In
the second operating mode, the device can retrieve an IP address for itself
from a DHCP server in the LAN.
Network without a DHCP server
In a network without a DHCP server, unconfigured LANCOM devices enable
their own DHCP server service when switched on and assign IP addresses,
information on gateways, etc. to other computers in the LAN (provided they
are set to automatic retrieval of IP addresses – auto DHCP). In this constella-
tion, the device can be accessed by every computer with the auto DHCP func-
tion enabled with a Web browser under IP address
172.23.56.254 .
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With the factory settings and an activated DHCP server, the device for-
wards all incoming DNS requests to the internal Web server. This
means that a connection can easily be made to set set up an uncon-
figured LANCOM by entering any name into a Web browser.