- Kerio WinRoute Firewall Administrator's Guide

23.3 Automatic user authentication using NTLM

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The conﬁguration of the WinRoute’s web interface must include a valid DNS name of the

server on which WinRoute is running (for details, see chapter 9.1).

Figure 23.5 Conﬁguration of WinRoute’s Web Interface

Web browsers

For proper functioning of NTLM, a browser must be used that supports this method. By

now, the following browsers are suitable:

• Microsoft Internet Explorer version 5.01 or later

• Firefox, Netscape, Mozilla or SeaMonkey with the core version Mozilla 1.3 or later

NTLM authentication process

NTLM authentication process diﬀers depending on a browser used.

Microsoft Internet Explorer

NTLM authentication is performed without user’s interaction.

The login dialog is displayed only if NTLM authentication fails (e.g. when user

account for user authenticated at the client host does not exist in WinRoute).

Warning: One reason of a NTLM authentication failure can be invalid login user-

name or password saved in the Password Manager in Windows operating systems

(Control Panels → User Accounts → Advanced → Password Manager) applying to

the corresponding server (i.e. the WinRoute host). In such a case, Microsoft Internet