SSO and LDAP Configuration for Office365-only organization

[Marzigliano]

We're configuring our first/new FortiGate device and need to connect in users on the LDAP/RADIUS and SSO pages. There is no local server, AD, or domain controller presence in the organization, as they exclusively use Office 365, so we are trying to configure the FortiGate to connect to Office 365 or Azure for the LDAP/RADIUS and SSO configuration. We've been scouring the documentation/help at Fortinet and at Microsoft but to no avail.  We will face a similar challenge next week with an org that has only G-Suite users and no local servers either.

[v20100 · Accepted solution]

We are assuming that Domain Services and LDAPS is properly configured in Azure

On FG, for ldap server, make sure you use port 636

Common Name Identifier: sAMAccountName

Use your DN

Bind type: Regular

Username: use company\username syntax.

If you use username or username@companydomainname it does not work

Secure Connection: selected

Protocol LDAPS

No certificate

Check that the connection is successful and if you are on version 6, test a user credential from there.

No point to carry on, if you connection is not successful

When you create your User group, use the previously created LDAP server.

If like me, you want to restrict access to a particular user group, on your Recursive list, select OU=AADDC Users, and search for your required group. Once found, you need to right click on it to select it.

The next step is the one which tricked me for a couple of days: 

When you try Forticlient, it fails to authenticate. Error message is not helping  and there is nothing in the logs of interest. Of course, there is nothing either on AzureAD

The change to make it work is as follow on the FG:

config system global

set ldapconntimeout 5000

end

Also, on the Forticlient, username is shortname of UPN. If user uses full UPN it will fail. You can see these attempts in the logs

Good luck

[baker_gt]

Thanks for this guys, i have got it all working with the help of

https://docs.microsoft.com/en-us/azure/active-directory-domain-services/active-directory-ds-admin-gu...

But the costs are crazy. $150 AUD a month to do some LDAPS lookups are a bit rich!

[Schubawi]

Is Fortigate Looking at these Posts?

the Organizations are moving off onsite AD servers and SSO to O365 or G Suite will be beneficial for FortiOS,

For Instance NZ Schools have just implemented fortigates to every school and the MSP's are moving away from local ad due to cost saving requirements,

but they cant if they require user identification

[Schubawi]

This will Work if you deploy a Fortiauthenticator to your network,

https://docs.fortinet.com/document/fortiauthenticator/6.0.3/administration-guide/641286/remote-authe...

I dont see Fortinet adding a Function in their firewalls to remove a device in their product stack

It would be a nice to have. if Fortinet is Looking to sell a Fortigate "with SAML, or OAUTH" at a nice price

[ArnaudF]

Fortigate already support SAML as SP for firewall and SSL VPN web portal authentication https://docs.fortinet.com/document/fortigate/6.4.0/new-features/558169/saml-sp-for-vpn-authenticatio... :)