AAA AuthorizationDell Networking OS enables AAA new-model by default.You can set authorization to be either local or remote. Different combinations of authentication andauthorization yield different results. By default, Dell Networking OS sets both to local.Privilege Levels OverviewLimiting access to the system is one method of protecting the system and your network. However, attimes, you might need to allow others access to the router and you can limit that access to a subset ofcommands. In Dell Networking OS, you can configure a privilege level for users who need limited accessto the system.Every command in Dell Networking OS is assigned a privilege level of 0, 1, or 15. You can configure up to16 privilege levels in Dell Networking OS. Dell Networking OS is pre-configured with three privilege levelsand you can configure 13 more. The three pre-configured levels are:• Privilege level 1 — is the default level for EXEC mode. At this level, you can interact with the router,for example, view some show commands and Telnet and ping to test connectivity, but you cannotconfigure the router. This level is often called the “user” level. One of the commands available inPrivilege level 1 is the enable command, which you can use to enter a specific privilege level.• Privilege level 0 — contains only the end, enable, and disable commands.• Privilege level 15 — the default level for the enable command, is the highest level. In this level youcan access any command in Dell Networking OS.Privilege levels 2 through 14 are not configured and you can customize them for different users andaccess.After you configure other privilege levels, enter those levels by adding the level parameter after theenable command or by configuring a user name or password that corresponds to the privilege level. Formore information about configuring user names, refer to Configuring a Username and Password.By default, commands in Dell Networking OS are assigned to different privilege levels. You can accessthose commands only if you have access to that privilege level. For example, to reach the protocolspanning-tree command, log in to the router, enter the enable command for privilege level 15 (thisprivilege level is the default level for the command) and then enter CONFIGURATION mode.You can configure passwords to control access to the box and assign different privilege levels to users.Dell Networking OS supports the use of passwords when you log in to the system and when you enterthe enable command. If you move between privilege levels, you are prompted for a password if youmove to a higher privilege level.Configuration Task List for Privilege LevelsThe following list has the configuration tasks for privilege levels and passwords.• Configuring a Username and Password (mandatory)• Configuring the Enable Password Command (mandatory)• Configuring Custom Privilege Levels (mandatory)• Specifying LINE Mode Password and Privilege (optional)• Enabling and Disabling Privilege Levels (optional)Security 777
