Objective

Management access modes such as SSH, Console, Telnet, HTTP, and HTTPS allow a user to access a device.  Authentication can be required of users to improve security.  The 200 and 300 Series Managed Switches can authenticate locally or on a TACACS+ or RADIUS server.  This document explains how to assign an authentication method on the 200 and 300 Series Managed Switches.

Applicable Devices

• SF/SG 200 and SF/SG 300 Series Managed Switches

Software Version

• 1.3.0.62

Management Access Authentication

Step 1. Log in to the web configuration utility and choose Security > Management Access Authentication.  The Management Access Authentication page opens:

Step 2. Choose the type of application that you would like to assign authentication to from the Application drop-down list.  Possible applications are:

• Console — Allows you to manage the switch with a console interface. Allows you to connect to the switch and perform some configurations even if the IP address of the switch is not known.

• Telnet — A character-based communication protocol that allows you to remotely connect to the switch over a TCP/IP network.  Telnet is not recommended due to the lack of encryption.

• Secure Telnet (SSH) — Performs the same functions as telnet plus encryption.  SSH is recommended for remote connections.

• HTTP — Protocol that allows you to access the graphical user interface (GUI) of the switch.  This is in contrast to Telnet and SSH which are command prompt based.

• Secure HTTP (HTTPS) — Performs the same functions as HTTP with the addition of secure communication.

Step 3. Choose a method of authentication from the list of Optional Methods and then click the > button to move it to the Selected Methods list. Different methods provide different levels of security.

Note: The order that the authentication methods are selected is the order that user authentication occurs.  If RADIUS is selected before local, the device will attempt to authenticate the user by a RADIUS server before the local method.

• RADIUS— RADIUS encrypts just the password. Authentication is on a RADIUS server and requires a configured RADIUS server.

• TACACS+— TACACS+ encrypts all of the data during authentication.  Authentication is on a TACACS+ server and requires a configured TACACS+ server.

• None— Authentication is not required to access the switch.

• Local— User information is verified by information stored on the switch.

Step 4. Click Apply to save the authentication settings or click Cancel to cancel your changes.