Tenda F303 Manual page 78

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.