Lantronix SLC 8000 Advanced Console Manager User Guide - Page 280

12: User Authentication 12: User Authentication Users who attempt to log in to the SLC advanced console manager by means of Telnet, SSH, the console port, or one of the device ports are granted access by one or more authentication methods. The User Authentication page provides a submenu of methods (Local Users, NIS, LDAP, RADIUS, Kerberos, and TACACS+) for authenticating users attempting to log in. Use this page to assign the order in which the SLC unit will use the methods. By default, local user authentication is enabled and is the first method the SLC 8000 advanced console manager uses to authenticate users. If desired, you can disable local user authentication or assign it a lower precedence. Note: Regardless of whether local user authentication is enabled, the local user sysadmin account is always available for login. For security purposes, full administrative access to the SLC via the default sysadmin local user account can be limited to only the front console port of the SLC device. See Limiting Sysadmin User Access on page 56. Authentication can occur using all methods, in the order of precedence, until a successful authentication is obtained, or using only the first authentication method that responds (in the event that a server is down). If you have the same user name defined in multiple authentication methods, the result is unknown. Example: There is an LDAP user "joe" and an NIS user "joe" and the order of authentication methods is: 1. Local Users 2. LDAP 3. NIS User "joe" tries to log in. Because there is an LDAP user "joe," the SLC unit tries to authenticate him against his LDAP password first. If he fails to log in, then the SLC 8000 advanced console manager may (or may not) try to authenticate him against his NIS "joe" user password. To enable, disable, and set the precedence of authentication methods: 1. From the main menu, select User Authentication. The following page displays: SLC™ 8000 Advanced Console Manager User Guide 280