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.
jhussain_FTNT
Article Id 192454

Description

 

This article describes how to handle a scenario where users are unable to connect to the server via RDP through the SSL VPN web portal.

Solution

 

When users are connected via SSL VPN through the web portal and process the following actions, they will receive a 'connect closed' error.
Select the quick connection, select the RDP, specify the server IP address, and select launch with the default security menu 'standard RDP encryption security'.

Select the security menu with Network level authentication as shown in the image below and then select Launch. A prompt for server login will appear. After entering the credentials, it will be possible to connect to the server via RDP successfully.
 

 

Note: If setting the Security type to Network Level Authentication does not work, try 'Allow the server to choose the type of security'.