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RolandBaumgaertner72
Contributor

SSL VPN Failure Permission Denied -455 after update to 7.4.4

Hi,

 

I saw many posts but no solution that worked for us. Since yesterday, after the update to 7.4.4 we cant connect via SSL VPN with LDAP and FortiToken Users. Local Users are working fine. We tried with different users (NO user can connect and we have like at least 20 per day), different PCs and different Forticlient Versions.

 

We did not change anything from yesterday and on the other office with FG100F and 7.4.3 it still works without any problem with the same LDAP configuration.

 

Is it possible that this is a bug in 7.4.4. Any ideas o suggestions?

 

Thanks!

1 Solution
RolandBaumgaertner72
Contributor

Hi,

 

solved, with the certificates loaded on the FW we can connect without any problems.

 

Thanks

View solution in original post

5 REPLIES 5
AnthonyH
Staff
Staff

Hello RolandBaumgaertner72,

 

It may be related to the Root CA enforcement which requires the LDAP server certificate to be installed on the Fortigate, please refer to the link below:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-LDAPS-certificate-issuer-enforcement/ta-p/...

Technical Support Engineer,
Anthony.
RolandBaumgaertner72
Contributor

Hi,

 

but how can I install certificate issuer (the root CA) on the FortiGate store or do I have to download the root certificate from the FortiGate and install it on the endpoint's certificate store and mark it as trusted??

 

Do you have some more information?

 

Thanks!

Debbie_FTNT

Hey Roland,

the FortiGate is client to the LDAP server in this instance - so you need to get the root CA of the LDAP server certificate, and upload that root CA to FortiGate, to ensure it trusts the LDAP server certificate (and its issuer).

As to how to install it:

1. Download the CA certificate that signed the LDAP server certificate

2. Log into FortiGate

3. Go to System > Certificate Management

4. Click on 'Create New/Import', then CA Certificate

5. Select the certificate, and click OK

 

That should install the certificate in question, and the LDAP server certificate should be trusted in the future.

Cheers,

Debbie

That should do it;

+++ Divide by Cucumber Error. Please Reinstall Universe and Reboot +++
hbac
Staff
Staff

Hi @RolandBaumgaertner72.,

 

Under User & Authentication > LDAP Servers > Edit, are you able to 'Test User Credentials'? What is the connection status? 

 

Regards, 

RolandBaumgaertner72
Contributor

Hi,

 

solved, with the certificates loaded on the FW we can connect without any problems.

 

Thanks

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