Appendix B. Glossary

access control list (ACL)

ACLs can provide basic traffic-filtering capabilities on Cisco routers. ACLs can be configured for all routed network protocols to filter packets as they pass through a router or security appliance. An ACL may be used for packet filtering (a type of firewall), as well as for selecting types of traffic to be analyzed, forwarded, or influenced in some manner.

accounting

Tracking users’ consumption of network resources. This information may be used for management purposes, planning, billing, or other purposes. Typical information that is gathered includes the user’s name, the nature of the service delivered, when the service began, and when it concluded.

Advanced Encryption Standard (AES)

The AES initiative ...

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