All Barracuda Web Filter models 410 and above, firmware versions 3.3 and above.
No. NTLM (and Kerberos) authentication mechanisms require that the Barracuda Web Filter be a trusted host in the Windows Domain and that it receive traffic directly from the users (as a proxy). In WCCP deployments, the Barracuda Web Filter receives outgoing traffic only after they go to the Cisco Router.
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