FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
mle2802
Staff
Staff
Article Id 278268
Description

This article describes the solution for the failure of PCI scan for SSL VPN using Tlsv1.2

Scope FortiGate
Solution

In some cases, a PCI scan could result in failure as an insecure cipher is used in Tlsv1.2 for SSL VPN. Below is an example from a PCI scan.

 

insecure_1.PNG

 

insecure_2.PNG


insecure_3.PNG

 

On the admin GUI, it is possible to disable ssl-static-key-ciphers and use strong-crypto to eliminate this issue. However, those options are not available for an SSL VPN setting. To work around this, ban insecure ciphers using the following commands:


config vpn ssl settings

set banned-cipher RSA DHE CAMELLIA 3DES SHA1 SHA256 SHA384 AESCCM

end

 

After that, running the scan again will show the connection is only established using strong ciphers:

 

secure cipher.PNG

 

Related document:
FortiGate encryption algorithm cipher suites