> # Information About Switch Management Security

> Management security in any switch in the Cisco MDS 9000 Family provides security to all management access methods, including the command-line interface (CLI) or Simple Network Management Protocol (SNMP).

> This section includes the following topics:

> - Security Options
> - SNMP Security Options
> - Switch AAA Functionalities
> - About RADIUS Server Default Configuration
> - About the Default RADIUS Server Encryption Type and Preshared Key
> - About RADIUS Servers
> - About Validating a RADIUS Server
> - About Vendor-Specific Attributes
> - VSA Format
> - Specifying SNMPv3 on AAA Servers
> - One-Time Password Support
> - About TACACS+
> - About TACACS+ Server Default Configuration
> - About the Default TACACS+ Server Encryption Type and Preshared Key
> - About TACACS+ Servers
> - Password Aging Notification through TACACS+ Server
> - About Validating a TACACS+ Server
> - About Users Specifying a TACACS+ Server at Login
> - About Bypassing a Nonresponsive Server
> - AAA Server Distribution
> - Starting a Distribution Session on a Switch
> - CHAP Authentication
> - MSCHAP Authentication
> - About Enabling MSCHAP
> - Local AAA Services
> - Accounting Services

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