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Remote Control Technologies

N-central offers a host of technologies that let you access devices by remote control within N-central. Settings for all technologies described below are located here.

Remote Control default applications

For remote control operations, the default application varies based on your operating system and remote control type.

Remote Control Type

Windows

Mac OS X

Custom

N/A

N/A

MSP Connect

Thick client

Thick client

Direct Connect

DirectConnect includes a proprietary application.

Remote Desktop

Mstsc

N/A

SSH

PuTTY

N/A

TeamViewer

TeamViewer includes a proprietary application.

Telnet

PuTTY

N/A

Web

Web Browser

Web Browser

Requirements

The following requirements apply to all of the different types of remote control available in MSP N-central:

  • You must configure a firewall to allow Internet access to TCP Port 22 (Secure Shell) on both the MSP N-central server and the remote device.
  • The MSP N-central server and Windows Probes must be able to resolve the domain name sis.n-able.com.
  • Ports that have been configured in MSP N-central for use by remote control connections should not already be in use by another application (making them unavailable) on the remote device.

MSP Connect

For devices upgraded with 10.2 Agents, MSP Connect offers remote control of Mac devices, terminal services support, session reports in an audit trail, and detailed system information including Windows Event Log for Professional nodes.

Direct Connect

Direct Connect leverages NTR Global's cloud technology for devices with older, pre-10.2 agents.

Direct Connect is unavailable to devices running 10.2 (or greater) Agents. Devices upgraded with 10.2 Agents will use MSP Connect remote control technology.

Direct Connect remote control is available for both Essential Mode and Professional Mode devices.

The following ports must be accessible to use Direct Connect or Attended Remote Control for remote control connections:

Port Number Port Location
MSP N-central Server Target Device
Inbound Outbound Inbound Outbound

Port 80

Ö      

Port 443

Ö      

Port 11438

      Ö

Outbound connections establish a bidirectional tunnel.

If you have blocked port 80, then port 443 can be used.

Attended Remote Control and Direct Connect remote control connections are not supported on 64-bit browsers.

Remote Desktop

The following requirements must be met in order to control devices remotely using a Remote Desktop connection:

  • Within MSP N-central, the device must be configured to allow remote connections.
  • If your operating system is Windows XP, the device must have the Allow users to connect remotely to this computer check box enabled in the System Properties. To verify, go to Start > Control Panel > System and select the Remote tab.
  • If you are using a Windows probe to control devices remotely, the File and Printer Sharing for Microsoft Networks option in the Local Area Connection Properties must be enabled and your firewall must be configured to allow this type of sharing.
  • Javascript, java applet, and the Run ActiveX controls and plug-ins option must be enabled in your browser security settings.
  • The Display mixed content option must be enabled in the browser's Security Settings and the refresh rate shuld be set to a value less than the Session Timeout Value for the user account.
  • J2SE Runtime Environment 5.0 update 6 must be installed.
  • You must allow access to the Internet from the target device on port 22.
  • If you are using the Windows XP operating system and have the Welcome screen enabled, pressing Ctrl+Alt+Delete will launch the Task Manager instead of launching the Windows Security dialog. You can disable the Welcome screen by clicking Start > Control Panel > User Accounts > Change the way users log on or off and clearing the Use the welcome screen for fast and easy logon check box.

SSH

A connection over port 22 used by Mac and Linux for remote terminal access.

The SSH connection is only available from a Windows Probe to a Mac or Linux or generic device.

TeamViewer

A third-party remote control tool. Team Viewer connections can be initiated from NC on devices where TeamViewer is already installed and activated.

Note: TeamViewer is not a remote control technology provided or supported by N-able.

Custom

The following requirements must be met in order to control devices remotely with a custom connection that uses VNC:

  • Within MSP N-central, the device must be configured to allow remote connections.
  • If you are using a Windows probe to control devices remotely, the File and Printer Sharing for Microsoft Networks option in the Local Area Connection Properties must be enabled and your firewall must be configured to allow this type of sharing.
  • Javascript, java applet, and the Run ActiveX controls and plug-ins option must be enabled in your browser security settings.
  • The Display mixed content option must be enabled in the browser's Security Settings and the refresh rate should be set to a value less than the Session Timeout Value for the user account.
  • J2SE Runtime Environment 5.0 update 6 must be installed.
  • The WMI Performance Adapter service must be running on the device that you want to control remotely.
  • VNC software must be configured as a service and not as an application.
  • You must allow access to the Internet from the target device on port 22.
  • VNC connections to devices using Windows Vista, Windows 2008 or Windows 7 will not be able to use the Ctrl-Alt-Del icon unless User Account Control (UAC) has been enabled on the target device.

VNC remote control will not work on Mac OS X devices unless a VNC server has been installed on the device or Apple Remote Desktop has been enabled. In order to use VNC on devices that use Apple Remote Desktop 2.2 or higher, perform the following:

For devices with Mac OS X v10.4

  1. On the device, select System Preferences > Sharing > Apple Remote Desktop.
  2. Click Access Privileges.
  3. Select VNC viewers may access with a password.
  4. Enter a password.
  5. In MSP N-central, configure the VNC connection to use the same password.

For devices with Mac OS X v10.5

  1. On the device, select System Preferences > Sharing > Remote Management > Computer Settings.
  2. Select VNC viewers may access with a password.
  3. Enter a password.
  4. In MSP N-central, configure the VNC connection to use the same password.

    MSP N-central's VNC Viewer can be used for Mac devices using Apple Remote Desktop or both a third-party VNC server and Apple Remote Desktop at the same time. However, the MSP N-central VNC Applet will only work if the Mac device uses a third-party VNC server.

Example

N-central can tunnel any client/server application that can add ports to the command line. For example, a remote system running a VNC Server. Install a VNC Viewer on your local system. Choose Custom, and configure as follows: