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Network Security, Firewalls, and VPNs by J. Michael Stewart

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Glossary of Key Terms

802.1x

Port or portal authentication. A mechanism commonly used by network devices, such as firewalls, routers, switches, and wireless access points, to perform authentication of users before allowing communication to continue across or through the device. The authentication can take place locally on the device or go to an authentications service, such as a credit card payment system, PKI, or directory service.

A

AAA services

Combination of authentication, authorization, and accounting on a dedicated system. Examples include RADIUS, TACACS, and directory services such as LDAP and Active Directory.

Access control

The process or mechanism of granting or denying use of a resource; typically applied to users or generic network traffic. ...

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