Dell Force10 S4820T S4820T Configuration Guide - Page 817

42 Security e c s Security features are supported on platforms: S4820T This chapter discusses several ways to provide access security to the Dell Force10 system. Platform-specific features are identified by the c, e or s icons (as shown below). • AAA Accounting on page 817 • AAA Authentication on page 820 • AAA Authorization on page 823 • RADIUS on page 828 • TACACS+ on page 833 • Protection from TCP Tiny and Overlapping Fragment Attacks on page 837 • SCP and SSH on page 837 • Telnet on page 843 • VTY Line and Access-Class Configuration on page 850 • Trace Lists on page 844 For details on all commands discussed in this chapter, see the Security Commands chapter in the FTOS Command Reference. AAA Accounting AAA Accounting is part of the AAA security model (Accounting, Authentication, and Authorization), which includes services for authentication, authorization, and accounting. For details on commands related to AAA security, refer to the Security chapter in the FTOS Command Reference. AAA Accounting enables tracking of services that users are accessing and the amount of network resources being consumed by those services. When AAA Accounting is enabled, the network server reports user activity to the security server in the form of accounting records. Each accounting record is comprised of accounting AV pairs and is stored on the access control server. As with authentication and authorization, you must configure AAA Accounting by defining a named list of accounting methods and then applying that list to various VTY lines. Configuration Task List for AAA Accounting The following sections present the AAA Accounting configuration tasks: Security | 817