
Glossary
SCALANCE WLC711
User Guide, V8.11, 07/2012, C79000-G8976-C260-03 A-13
URL Uniform Resource Locator. the unique global address of resources or files on the World
Wide Web. The URL contains the name of the protocol to be used to access the file
resource, the IP address or the domain name of the computer where the resource is located,
and a pathname -- a hierarchical description that specifies the location of a file in that
computer.
VLAN Virtual Local Area Network. A network of computers that behave as if they are connected to
the same wire when they may be physically located on different segments of a LAN. VLANs
are configured through software rather than hardware, which makes them extremely flexible.
When a computer is physically moved to another location, it can stay on the same VLAN
without any hardware reconfiguration.
The standard is defined in IEEE 802.1Q - Virtual LANs, which states that 'IEEE 802 Local
Area Networks (LANs) of all types may be connected together with Media Access Control
(MAC) Bridges, as specified in ISO/IEC 15802-3. This standard defines the operation of
Virtual LAN (VLAN) Bridges that permit the definition, operation and administration of Virtual
LAN topologies within a Bridged LAN infrastructure.”
VNS Virtual Network Services (VNS). A Siemens specific technique that provides a means of
mapping wireless networks to a wired topology.
VoIP Voice Over Internet Protocol. An internet telephony technique. With VoIP, a voice
transmission is cut into multiple packets, takes the most efficient path along the Internet and
is reassembled when it reaches the destination.
VPN Virtual Private Network. A private network that is constructed by using public wires to
connect nodes. These systems use encryption and other security mechanisms to ensure
that only authorized users can access the network and that the data cannot be intercepted.
VSA Vendor Specific Attribute, an attribute for a RADIUS server defined by the
manufacturer.(compared to the RADIUS attributes defined in the original RADIUS protocol
RFC2865). A VSA attribute is defined in order that it can be returned from the RADIUS
server in the Access Granted packet to the Radius Client.
Walled Garden A restricted subset of network content that wireless devices can access.
WEP Wired Equivalent Privacy. A security protocol for wireless local area networks (WLANs)
defined in the 802.11b standard. WEP aims to provide security by encrypting data over radio
waves so that it is protected as it is transmitted from one end point to another.
Wi-Fi Wireless fidelity. A term referring to any type of 802.11 network, whether 802.11b, 802.11a,
dual-band, etc. Used in reference to the Wi-Fi Alliance, a nonprofit international association
formed in 1999 to certify interoperability of wireless Local Area Network products based on
IEEE 802.11 specification.
WINS Windows Internet Naming Service. A system that determines the IP address associated with
a particular network computer, called name resolution. WINS supports network client and
server computers running Windows and can provide name resolution for other computers
with special arrangements. WINS supports dynamic addressing (DHCP) by maintaining a
distributed database that is automatically updated with the names of computers currently
available and the IP address assigned to each one.
DNS is an alternative system for name resolution suitable for network computers with fixed
IP addresses.
WLAN Wireless Local Area Network.
Table A-1 Networking Terms and Abbreviations (continued)
Term Explanation
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