> # Cisco DCNM-SAN Web Client Authentication

> Cisco DCNM-SAN Web Server does not communicate directly with any switches in the fabric. Cisco DCNM-SAN Web Server uses its own user name and password combination that is either stored locally or stored remotely on an AAA server.

> We recommend that you use a RADIUS or TACACS+ server to authenticate users in Cisco DCNM-SAN Web Server.

> ## DETAILED STEPS

> 1. Launch Cisco DCNM-SAN Web Client.
> 2. Choose Admin > Management Users > Remote AAA to update the authentication used by Cisco DCNM-SAN Web Client.
> 3. Set the authentication mode attribute to radius.
> 4. Set the RADIUS server name, shared secret, authentication method, and ports used for up to three RADIUS servers.
> 5. Click Modify to save this information.
> 6. Launch Cisco DCNM-SAN Web Client.
> 7. Choose Admin > Management Users > Remote AAA to update the authentication used by Cisco DCNM-SAN Web Client.
> 8. Set the authentication mode attribute to tacacs.
> 9. Set the TACACS+ server name, shared secret, authentication method, and port used for up to three TACACS+ servers.
> 10. Click Modify to save this information.

> Note Cisco DCNM-SAN does not support SecureID because it is not compatible with SNMP authentication. Cisco DCNM-SAN uses the same login credentials for all the switches in a fabric. Since SecureID cannot be used more than once for authentication, Cisco DCNM-SAN will not be able to establish a connection to the second switch using a SecureID.

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