Kerio Tech Firewall6 - Manual (Page 377)

25.2 Automatic user authentication using NTLM
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Figure 25.4 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:
• Internet Explorer version 5.01 or later
• Firefox or SeaMonkey with the core version Mozilla 1.3 or later
NTLM authentication process
NTLM authentication process differs depending on a browser used.
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 username 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, Internet Explorer sends saved login data instead of
NTLM authentication of the user currently logged in. Should any problems regarding
NTLM authentication arise, it is recommended to remove all usernames/passwords for
the server where WinRoute is installed from the Password Manager.