67 Appendix
devolo dLAN pro 1200+ WiFi ac/n
Using VLANs prevents the need for complicated physi-
cal wiring. This gives you greater spatial flexibility and
saves you having to purchase multiple costly individual
devices (e.g. routers, switches).
Different criteria can be used for mapping to VLANs,
such as port assignments or addresses. The
dLAN pro 1200+ WiFi ac/n allows VLANs to be
mapped by port and/or access point. Other mapping
methods by third-party devices using "VLAN tags" are
also supported. In addition, it is possible to prioritise
data traffic in the VLAN configuration.
5.1.4 What is WLAN (WiFi)?
WLAN (Wireless Local Area Network) refers to the use
of radio technology to network computers and other
devices. While it is possible to wirelessly connect com-
puters in pairs (peer-to-peer, p2p), a central access
point is required to set up a network of multiple devic-
es. Such access points are frequently combined in a
single device with modems for Internet access and
routers to manage network traffic.
The wireless network established by an access point
using a specific channel and name (SSID) has a limited
range. The range of the access point, which is also
known as a "radio cell", is impeded by building walls.
In some cases, stable connections are often only possi-
ble between WLAN devices within a single room.
As it is not possible to rely on hardware such as net-
work cables (in a LAN) or household wiring (in a dLAN)
to control access to a WLAN, wireless networking nat-
urally presents special security challenges. WLANs
therefore use a number of security measures, such as a
concealed network name (SSID), data encryption and
access control via the MAC addresses of the network
stations.
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