Configuration Examples
96
Install the IP network protocol and a Web browser for every workstation computer
which is to have access to the OpenCom 100 network features.
DNS Name Resolution
In a serverless LAN, the internal DNS name resolution is performed by the
OpenCom 100. If you type the string “host.domain” into your browser, a DNS request
is sent to the OpenCom 100 IP address. The OpenCom 100 responds with the correct
IP address, so that the Configurator home page can be called up. In a peer-to-peer
network (Windows 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 workstations by the OpenCom 100. The OpenCom 100 is not visible in
the network environment.
Internet Access
If access to an ISP has been configured on the OpenCom 100, 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 URL (uniform
resource locator; Internet address; “http://...”) in your browser. In a serverless LAN, the
OpenCom 100 is configured as a DNS server and default gateway. The workstation
computer therefore sends its Internet connection request to the OpenCom 100. In
almost all cases, the request will contain a DNS name which is unknown in the internal
network. When you type a URL into your browser, the OpenCom 100 receives the
request to find the corresponding IP address. If the name is unknown in the LAN, the
request is forwarded to an ISP’s external DNS server.
Note
Workstation computers automatically add a domain name to URLs without a dot. You
specify this domain name in the Configurator. For example, if you have configured
“firm.co.uk” as the domain name, an access request for “www.firm.co.uk” will be in-
terpreted as a local DNS request which does not lead to the establishment of an In-
192.168.99.254 OpenCom 100 IP address
255.255.255.0 Network mask (class C network)
192.168.99.254 DNS server IP address
192.168.99.254 Default gateway IP address
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