172 GLOSSARYIP (network) address Internet Protocol address. A unique identifier for a device attached to anetwork using TCP/IP. The address is written as four octets separatedwith full-stops (periods), and is made up of a network part, identifyingwhich network the device resides on, and a host part, identifyingindividual devices on a given network.IPX Internetwork Packet Exchange. Network Layer (OSI Layer 3) protocolused for transferring data from servers to workstations.MAC address The hardware address of a device connected to a shared medium.Map Graphical display of your network in the main window of TraffixManager, showing groups of devices and the traffic connectionsbetween them.MIB Management Information Base. In SNMP, the MIB is the databasewhere information about the managed objects is stored. The MIB cancontain information about many aspects of the devices being managed.multicast A message sent to a specific group of nodes on a networksimultaneously.NL Network Layer. The third layer of the OSI Reference Model. This layer isresponsible for controlling message traffic. It receives data that hasbeen framed by the Data Link Layer below it, converts this data intopackets, and passes the result to the Transport Layer that directs thepackets to their destination.network sweepattackIf someone from outside your network is attempting to gain access toyour network without permission, one technique they may use is tosystematically test every IP address on your network in an attempt todiscover the address of real devices which can be accessed. For thepurpose of the Traffix Manager events system, this is referred to as anetwork sweep attack.object Term used in Traffix Manager to describe a device or a group of devicesdisplayed in the Map.Object List A hierarchical list of the devices and groups of devices seen on yournetwork.octet A digital unit of information comprising eight binary digits (bits)equivalent to a byte.