19216811.live11N Broadband Wireless Router
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WDS
A wireless distribution system (WDS) is a system enabling the wireless
interconnection of access points in an IEEE 802.11 network. It allows a wireless
network to be expanded using multiple access points without the traditional
requirement for a wired backbone to link them. All base stations in a wireless
distribution system must be configured to use the same radio channel, method of
encryption (none, WEP, or WPA) and the same encryption keys. They may be
configured to different service set identifiers. WDS also requires every base
station to be configured to forward to others in the system. WDS may also be
considered a repeater mode because it appears to bridge and accept wireless
clients at the same time (unlike traditional bridging).WDS may be incompatible
between different products (even occasionally from the same vendor) since it is
not certified by the Wi-Fi Alliance. WDS may provide two modes of wireless
AP-to-AP connectivity:
Wireless bridging, in which WDS APs communicate only with each other and
don't allow wireless clients or stations (STA) to access them.
Wireless repeating, in which APs communicate with each other and with
wireless STAs.
DMZ
In computer security, a DMZ (sometimes referred to as a perimeter networking)
is a physical or logical subnetwork that contains and exposes an organization's
external-facing services to a larger untrusted network, usually the Internet. The
purpose of a DMZ is to add an additional layer of security to an organization's
local area network (LAN); an external attacker only has access to equipment in
the DMZ, rather than any other part of the network. Hosts in the DMZ have
limited connectivity to specific hosts in the internal network, although
communication with other hosts in the DMZ and to the external network is
allowed. This allows hosts in the DMZ to provide services to both the internal
and external network, while an intervening firewall controls the traffic between
the DMZ servers and the internal network clients. Any services such as Web
servers, Mail servers, FTP servers and VoIP servers, etc. that are being provided
to users on the external network can be placed in the DMZ.