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Configuration Examples OpenCom 100 in a Serverless LAN
responds with the correct IP address,
so that the Configurator home page
can be called up.
In a peer-to-peer network (“Win-
dows Network”), the workstations
each have a name which is displayed
in the network environment. These
NetBIOS names can differ from the
DNS names assigned to the worksta-
tions by the OpenCom 100. For this
reason, the OpenCom 100 is not visi-
ble in the network environment.
Internet Access
The OpenCom 100 can be operated
as an Internet access server, without
any additional configuration of the
workstations. When you want to see
a Web page, you simply type the de-
sired URL in your browser. In a
serverless LAN, the OpenCom 100 is
configured as DNS server and de-
fault gateway. The workstation
therefore sends its Internet connec-
tion request to the OpenCom 100.
In almost all cases, the request will
contain a DNS name which is un-
known in the internal network.
When you type a URL into your
browser, the OpenCom 100 receives
the request to find the correspond-
ing IP address. If the name is un-
known in the LAN, the request is for-
warded to an ISP’s external DNS
server.
Note: URLs without full stops are
automatically complemented with a
domain name by the workstation.
You specify this domain name in the
Configurator. For example, if you
have configured “firm.uk” as the do-
main name, an access request for
“www.firm.uk” will be interpreted as
a local DNS request which does not
lead to the establishment of an Inter-
net connection. For this reason, you
should choose a name which is not
used in the Internet as the domain
name, “firm-opencom.uk” for exam-
ple.
RAS Access
You can establish a connection from
an external computer with an ISDN
card to the OpenCom 100. The nec-
essary TCP/IP settings are transmit-
ted by the OpenCom 100 on estab-
lishment of the connection. The
computer that has dialled in now
has access to all services in the LAN
capable of being used via TCP/IP. The
authorisation for RAS access is set up
in the Configurator via the menu
User Manager: User Groups.
In a serverless LAN, Windows uses
the NetBIOS protocol for accessing
files and printers via the network en-
vironment. NetBIOS can use Net-
BEUI, IPX/SPX or TCP/IP as the trans-
port protocol. In the network
environment, you can only access
files and printers on workstations us-
ing TCP/IP for NetBIOS.
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