Managing SteelHeads : Configuring general security settings
  
Configuring general security settings
You can prioritize local, RADIUS, and TACACS+ authentication methods for the system and set the authorization policy and default user for RADIUS and TACACS+ authorization systems in the Administration > Security: General Settings page.
Make sure to put the authentication methods in the order in which you want authentication to occur. If authorization fails on the first method, the next method is attempted, and so on, until all of the methods are attempted.
To set TACACS+ authorization levels (admin or read-only) to allow certain members of a group to log in, add this attribute to users on the TACACS+ server:
service = rbt-exec {
local-user-name = “monitor”
}
where you replace monitor with admin for write access.
For details about setting up RADIUS and TACACS+ servers, see the SteelHead Deployment Guide.
To set general security settings
1. Choose Administration > Security: General Settings to display the General Settings page.
General Security Settings page
2. Under Authentication Methods, complete the configuration as described in this table.
Control
Description
Authentication Methods
Specifies the authentication method. Select an authentication method from the drop-down list. The methods are listed in the order in which they occur. If authorization fails on the first method, the next method is attempted, and so on, until all of the methods have been attempted.
For RADIUS/TACACS+, fallback only when servers are unavailable
Select this check box to prevent local login if the RADIUS or TACACS+ server denies access, but allow local login if the RADIUS or TACACS+ server is not available.
Safety Account
Creates a safety account so that admin or sys admin users can login to the SteelHead even if remote authentication servers are unreachable. A safety account increases security and conforms to US National Institute of Standards and Technology (NIST) requirements.
Only the selected safety account will be allowed to login in cases where the AAA server isn’t reachable. (Only one user can be assigned to the safety account.)
You can create a system administrator user in the Administrator > Security: User Permissions page. For details, see Managing user permissions.
Safety Account User
Select the user from the drop-down list.
Authorization Policy
Appears only for some Authentication Methods. Optionally, select one of these policies from the drop-down list:
• Remote First—Checks the remote server first for an authentication policy, and only checks locally if the remote server doesn’t have one set. This is the default behavior.
• Remote Only—Only checks the remote server.
• Local Only—Only checks the local server. All remote users are mapped to the user specified. Any vendor attributes received by an authentication server are ignored.
3. Click Apply to apply your changes to the running configuration.
4. Click Save to Disk to save your settings permanently.