Symantec 10521146 Administration Guide - Page 351

Glossary 351 MAC (Media Access Control) malicious code malware manipulation menu bar MIB (Management Information Base) middleware MIME (Multipurpose Internet Mail Extensions) mirror port mode monitoring monitoring interface MSA multicast multiuser name server On a network, a computer's unique hardware number. The MAC address is used by the Media Access Control sublayer of the Data Link Control (DLC) layer of telecommunication protocols. There is a different MAC sublayer for each physical device type. The data-link layer is the protocol layer in a program that handles the moving of data in and out across a physical link in a network. Programs such as viruses, worms, logic bombs, and Trojan horses that are surreptitiously inserted into programs to destroy data, run destructive or intrusive programs, or otherwise compromise the security or integrity of the victim's computer data. Programs and files that are created to do harm. Malware includes computer viruses, worms, and Trojan horses. The insertion of arbitrary streams of data without the user noticing. The horizontal area at the top of a window containing all of the commands appropriate to the selected console view tab. A database of objects that can be monitored by a network management system. Both SNMP and RMON use standardized MIB formats that allow any SNMP and RMON tools to monitor any device defined by an MIB. An application that connects two otherwise separate applications. A protocol used for transmitting documents with different formats via the Internet. See interface, monitoring. A system state in which a single action or a series of actions are performed. A mode has an On condition and an Off condition. For example, in-line mode for interfaces in a Symantec Network Security 7100 Series appliance is On if a security administrator configures those interfaces for in-line mode, and does the proper cabling of the ports. Using in-line mode, the appliance is placed into the network path, and can block malicious traffic. The viewing of activity in a security environment, generally in real-time. Monitoring allows security administrators to view the content of applications that are being used. See interface, monitoring. See Symantec Network Security Smart Agents. To simultaneously send the same message to a select group of recipients on a network, as opposed to broadcasting to all recipients on a network. Sometimes used synonymously as narrowcast. Of, or pertaining to, the ability of multiple, concurrent users to log on and run applications from a single server. A computer running a program that converts domain names into appropriate IP addresses and vice versa.