SonicWALL 5.8.1 Manuale Utente

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User Management
1014
SonicOS 5.8.1 Administrator Guide
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User group memberships can be set locally by duplicating LDAP user names (set in 
the LDAP configuration and applicable when the user group membership mechanism is 
LDAP)
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Polling rate
NTLM Authentication of Non-Domain Users
With NTLM, non-domain users could be users who are logged into their PC rather than into the 
domain , or could be users who were prompted to enter a user name and password and entered 
something other than their domain credentials. In both cases, NTLM allows for distinguishing 
these from domain users.
If the user name matches a local user account on the SonicWALL appliance then the NTLM 
response is validated locally against the password of that account. If successful, the user is 
logged in and given privileges based on that account. User group memberships are set from 
the local account, not from LDAP, and (since the password has been validated locally) will 
include membership of the Trusted Users group.
If the user name does not match a local user account, the user will not be logged in. The Allow 
limited access for non-domain users
 option does not apply for users authenticated via 
NTLM.
Credentials for NTLM Authentication in the Browser 
For NTLM authentication, the browser either uses the domain credentials (if the user is logged 
into the domain), thus providing full single-sign-on functionality, or prompts the user to enter a 
name and password for the website being accessed (the SonicWALL appliance in this case). 
Different factors affect the browser’s ability to use the domain credentials when the user is 
logged into the domain. These factors depend on the type of browser being used:
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Internet Explorer 7 – Internet Explorer uses the user’s domain credentials and 
authenticates transparently if the website that it is logging into (the SonicWALL appliance) 
is in the local intranet, according to the Security tab in its Internet Options. This requires 
adding the SonicWALL appliance to the list of websites in the Local Intranet zone in the 
Internet Options.
This can be done via the domain’s group policy in the Site to Zone Assignment List under 
Computer Configuration, Administrative Templates, Windows Components, Internet 
Explorer, Internet Control Panel, Security Page.
Note
Windows 7 and Vista machines require additional configuration to use RADIUS 
authentication with browser NTLM authentication via Internet Explorer. See  the 
.
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Google Chrome 7 – Chrome behaves the same as Internet Explorer, including requiring 
that the SonicWALL appliance is added to the list of websites in the Local Intranet zone in 
the Internet Options.
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Firefox 3.6 – Firefox uses the user’s domain credentials and authenticates transparently if 
the website that it is logging into (the SonicWALL appliance) is listed in the 
network.automatic-ntlm-auth.trusted-uris entry in its configuration (accessed by 
entering about:config in the Firefox address bar).
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Safari 3.6 – Although Safari does support NTLM, it does not currently support fully 
transparent logon using the user’s domain credentials.