Configure Remote Connection RDP Tools (MSTSC, RDCM, MobaXterm, RDM) Integrate with PSM

This post is to summarize a way how to configure a remote connection manager tool to integrate with CyberArk PSM. In this way, you can directly RDP into target server through PSM, without logging into PVWA to do connect.

Related Post:

• Configure SSH Clients Integrate with PSMP (Putty, SecureCRT, MobaXterm & WinSCP)

Microsoft Remote Desktop Connection (MSTSC)

To use Microsoft standard RDP client, Microsoft Remote Desktop Connection (MSTSC), you will need to start a program with following command

psm /u {Priv_Account_Name}@51Sectest.dev /a {Server_Name} /c PSM-RDP

For example: psm/u [email protected] /a 192.168.2.12 /c PSM-RDP

Windows 10 machines, Remote Desktop Connection might not have Program tab. Add the following line to the .rdp file: alternate shell:s:psm /u target-user /a target-address /c connection-component

Info

MSTSC has NLA enabled by default and the RDP connection will prompt a Windows Security window for authentication. To disable NLA when connecting with MSTSC, add the setting enablecredsspsupport:i:0 to one of the following files by editing the rdp file with notepad

Microsoft Remote Desktop Connection Manager

Microsoft has retired MRDCM software and following link is not having download anymore. There is some serious vulnerabilities found in this software, although it is still very popular Remote Desktop Connection Manager tool.
You can download RDCM here: https://www.microsoft.com/en-gb/download/details.aspx?id=44989 

Search by google and found this link to download : https://www.scom2k7.com/downloads/rdcman.msi
To integrate RDCM with CyberArk PSM, it requires some configuration changes on RDP file object. This post lists least step you will need to follow to get RDCM working with PSM. 

CyberArk KB: https://cyberark-customers.force.com/s/article/How-to-setup-Remote-Desktop-Connection-Manager

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How to connect through Privileged Session Manager for Windows using Remote Desktop Connection Manager

Introduction

Remote Desktop Connection Manager (RDCM) does not have the ability to disable credsspsupport and therefore you will be asked for credentials before the connection to the PSM is established. When connecting with an LDAP user this does not matter as it be able to automatically authenticate with these domain credentials however you will not be able to make connections when using CyberArk and RADIUS challenge-response authentication as their credentials are different.

You can download RDCM here: https://www.microsoft.com/en-gb/download/details.aspx?id=44989

Step-By-Step Instructions

Ensure the following group policy parameters are applied to the PSM server.

Always prompt for password upon connection - Disabled 
Require secure RPC communication - Enabled (this should already be enabled as part of hardening. 
Require use of specific security layer for remote (RDP) connections - Enabled - Set to RDP. 

You should now be able to use RADIUS challenge-response and CyberArk authentication with RDCM.

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1      Open Connection Manager application on your desktop and create an entry for the target device.

Give each entry a meaningful name to indicate the target device details.

2       Configure the Server Settings tab:

2.1.   Populate the Server name field with the text {PSM-Server-Hostname}

2.2.   Enter a friendly name of your choice in the Display name field.

3        Configure the Connection Settings tab:

3.1.   Uncheck the Inherit from parent checkbox.

3.2.   Populate the Start program field with this string as shown in the sample screenshot below:

psm /u {Priv_Account_Name}@51Sec-ITPROSEC /a {Server_Name} /c PSM-RDP

              

               Substitute:

            {Priv_Account_Name} = The username of the privileged account as defined in CyberArk; ie. MyUsernameAdmin

            {Server_Name} = The short name of the destination server name as resolvable via DNS; ie.  PrintServer

1   4   Configure the Logon Credentials tab as shown in the sample screenshot below:

4.1.   Uncheck the Inherit from parent checkbox

4.2.   Enter your non-privileged AD account username in the User name field

4.3.   Enter the text 51Sec-ITPROSEC in the Domain field

When you click to connect, you will enter the password for your non-privileged AD account.


Notes: How to connect to RDP Console / admin mode:
If you choose connect to console / admin, PSM will deny the session.

PSM server will tell you "The requested session access is denied".

• Make a copy of the PSM-RDP connection component (lets call it PSM-RDP-ADMIN).
• Set the "AlloweConnectToConsole" Value=Yes, Visible=Yes.
• Add it to the desired platform
• In RDP client where you specify the psm /u etc.. commands, change the /c to PSM-RDP-ADMIN

There is no "admin connect" in current version of MS-Windows after server 2003:

https://blogs.technet.microsoft.com/askperf/2007/04/27/application-compatibility-session-0-isolation/

For 2003 or Windows XP you would need a custom connection component with mstc.exe /admin or mstc.exe /console as the command.

MobaXterm

MobaXterm also support PSM well. Here are all configuration steps in the screenshot. 

Most important step is to configure Remote command "psm /u [email protected] /a 192.168.2.12 /c PSM-RDP"

Create a domain user account and save it into credential list. 

mRemoteNG

So far, not find a good way to support remote command to launch "psm /u [email protected] /a 192.168.2.12 /c PSM-RDP" after RDP logged in PSM .

Remote Desktop Manager Free Edition

YouTube Video:👀

References

• Configure an RDP Start Program
• How to connect through Privileged Session Manager for Windows using Remote Desktop Connection Manager