Introduction
Confused by the myriad of terms floating around the industry and what they mean? Search the glossary for your explanation!
This glossary was kindly provided by the SANS Institute
Glossary
3-way handshake
Machine A sends a packet with a SYN flag set to Machine B. B acknowledges A's SYN with a SYN/ACK. A acknowledges B's SYN/ACK with an ACK.
Access Control
Access Control ensures that resources are only granted to those users who are entitled to them.
Access Control List (ACL)
A mechanism that implements access control for a system resource by listing the identities of the system entities that are permitted to access the resource.
Access Control Service
A security service that provides protection of system resources against unauthorized access. The two basic mechanisms for implementing this service are ACLs and tickets.
Access Management Access
Management is the maintenance of access information which consists of four tasks: account administration, maintenance, monitoring, and revocation.
Access Matrix
An Access Matrix uses rows to represent subjects and columns to represent objects with privileges listed in each cell.
Account Harvesting
Account Harvesting is the process of collecting all the legitimate account names on a system.
ACK Piggybacking
ACK piggybacking is the practice of sending an ACK inside another packet going to the same destination.
Active Content
Program code embedded in the contents of a web page. When the page is accessed by a web browser, the embedded code is automatically downloaded and executed on the user's workstation. Ex. Java, ActiveX (MS)
Activity Monitors
Activity monitors aim to prevent virus infection by monitoring for malicious activity on a system, and blocking that activity when possible.
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