LDAP / NTLM authentication with explicit proxy

[James_G]

Does anyone have a simple guide to setting up LDAP / NTLM authentication with explicit proxy, without agents or DC polling, using per session HTTP authentication as documented here: https://help.fortinet.com/fos50hlp/56/Content/FortiOS/fortigate-WAN-opt/web_proxy.htm

PS this unit is running FortiOS 6.0.2

In my mind should be simple - but I'm struggling on this one :(

[James_G]

What I am trying to achieve is as documented here - http://help.fortinet.com/fos60hlp/60/Content/FortiOS/fortigate-authentication/FSAE.htm

All I need is NTLM auth to explicit proxy, no other SSO

Agentless NTLM support

Agentless NTLM authentication can be configured directly from the FortiGate to the Domain Controller via SMB protocol (no agent is required).

Note that this authentication method is only supported for proxy policies.

Syntax

Note that domain-controller is only available when method is set to ntlm and/or negotiate-ntlm is set to enable.

config authentication schemeedit <name>set method ntlmset domain-controller <dc-setting>nextend config user domain-controlleredit <name>set ip-address <dc-ip>set port <port> - default = 445set domain-name <dns-name>set ldap-server <name>nextend

[blackhole_route]

Yes - I do have this working and can reference my configs to get all the details if you are still having trouble with this.

IIRC, you also need to define authentication rules to select the auth scheme and backend domain controller for the traffic. And then ldap to query for group memberships after the user authenticates via ntlm.