Table of Acronyms

Acronym	Name	Description
ACE GSS	Application Control Engine Global Site Selector	Cisco’s  technology product for GLB
AD	Active Directory	Is a directory service system produced by the vendor Microsoft
ADNS	Authoritative Domain Name Service	Authoritative name server is a name server that gives answers in response to queries about names in a specific zone
BFD	Bidirectional Forwarding Detection	A form of keepalive mechanism used by routing protocols to rapidly detect link failure
BGP	Border Gateway Protocol	An exterior gateway routing protocol based on autonomous systems.
DC	Data Centre	A facility which houses a large volume of servers, network and storage systems
DDoS	Distributed Denial of Service	A form of attack where a large number of sytems simultaneously attempt to connect to a single target system to overwhelm its capacity
DHCP	Dynamic Host Configuration Protocol	Is a protocol used to assign devices connected to a network with a valid IP address
DMVPN	Dynamic Multipoint VPN	A hub & Spoke VPN architecture that enables spoke-to-spoke VPNs to be set up on demand
DNS	Domain Name Service	Is hierarchical naming system for computers, services, or any resource connected to the Internet or internal network
DR	Disaster Recovery	An event instantiated to recover a business’s systems from an unexpected disaster
EOL	End of Life	A product that is no longer being marketed or sold by a manufacturer
GLB	Global Load Balancer	A device/system designed to distribute workload or client connections across two or more distinct locations.
GRE	Generic Routing and Encapsulation	A method of encapsulating traffic within a tunnel construct to allow it to transit an area that it otherwise could not. Such a tunnel may be encrypted.
GSLB	Global Server Load Balancer	Citrix’s technology product for GLB
GSLBIP	Global Server Load Balancer IP	A GSLB site IP address is an IP address associated with a GSLB site
IP	Internet Protocol Address	A unique address that identifies each computer connected to an Internet Protocol based network
IS	Internet Systems	A network zone that hosts Close Brother’s internet facing and high sensitivity systems
LDAP	Lightweight Directory Authentication Protocol	Is a protocol used to access director services systems
MEP	Metric Exchange Protocol	Citrix proprietary protocol used for intercommunication between the NetScaler appliances for Global Server Load Balancing
MIP	Mapped IP	The NetScaler Mapped IP addresses (MIP) are used for server-side connections
NSIP	NetScaler IP	The NetScaler IP (NSIP) address is the management IP address used to access the NetScaler
OS	Office Systems	A network zone that hosts Close Brother’s internal systems and services
OSPF	Open Shortest Path First	An interior gateway routing protocol
PAC	Proxy auto-config	A file which includes configuration information and script language used by web browsers and other client software to access the internet via a proxy service
RPO	Recover Point Objective	This is the point-in-time to which systems and data must be recovered after an outage. It defines the amount of data loss that a business can endure
RTO	Recover Time Objective	The time within which systems and applications must be recovered after an outage. It defines the amount of downtime that a business can endure and survive
SNIP	Subnet IP	The subnet IP (SNIP) address is used in connection management and server monitoring
T&D	Test & Development	A network zone that hosts Close Brother’s test and development systems
VIP	Virtual IP	IP address assigned not bound to a specific application, network card or server
VLAN	Virtual Local Area Network	A VLAN is a partitioning technology, allowing for the segmentation of traffic into several LANs within the same physical switch
VPN	Virtual Private Network	A VPN extends a private network over a publicly accessible network, allowing systems and employees to access an organisation’s systems from another remote location
VRF	Virtual Routing and Forwarding	A method of segmenting the routing capacity of a device or group of devices to enable it to hold multiple routing tables