Here is a representative list: Android: Microsoft Remote Desktop iOS: Microsoft Remote Desktop Linux: rdesktop macOS: Microsoft Remote Desktop Windows Phone: Microsoft Remote Desktop Note that Windows Server supports only two simultaneous RDP sessions at once.When you purchase through links on our site, we may earn an affiliate commission.
How Many Remote Desktop Sessions Are Allowed Full Graphical DesktopWhat sets RDP apart from, say, Windows PowerShell or Secure Shell (SSH) remoting is the presence of the full graphical desktop, as shown in Figure 1. MORE: Best Remote Access Software and Solutions By default, the RDP server component listens for incoming connections on TCP port 3389 by default, although this can be changed by the administrator for security reasons. ![]() Microsofts justification for this advice is two-fold: A GUI layer consumes unnecessary system resources A GUI layer broadens the attack surface of your servers Regardless, many admins are accustomed to RDP-based remote administration, and seek to do so even in the newly released Windows Server 2016 operating system. How Many Remote Desktop Sessions Are Allowed How To Enable RDPLets learn how to enable RDP in Server 2016 (tl;dr: the process is identical to Windows Server 2012 R2). Server Manager Open the Server Manager console, navigate to the Local Server node, and click the Remote Desktop hyperlink as shown in Figure 2. The Remote Desktop hyperlink is simply a shortcut to the System Properties sheet from the System Control Panel item. Select Allow remote connections to this computer, and optionally enable Allow connections only from computers running Remote Destkop with Network Level Authentication (recommended). Network Level Authentication (NLA) protects Windows Server against denial-of-service (DoS) attacks by requiring authentication to take place before any graphical session is established by the server. Windows PowerShell From a lower-level perspective, incoming RDP connections are enabled on a server through two Registry values and a Windows Firewall rule. Open an elevated Windows PowerShell session and run the following commands. This first one creates the fDenyTSConnections value and sets it to 0 (off). This makes sense, because we dont want to deny Terminal Services (TS) connections. New-ItemProperty -Path HKLM:SystemCurrentControlSetControlTerminal Server -Name fDenyTSConnections -Value 0 -PropertyType dword -Force The next command creates and enables the UserAuthentication (Network Layer Authentication) value; NLA is a good idea and you should consider enabling it by default on your servers. New-ItemProperty -Path HKLM:SystemCurrentControlSetControlTerminal ServerWinStationsRDP-Tcp -Name UserAuthentication -Value 1 -PropertyType dword -Force The next command enables the predefined Remote Desktop Windows Firewall rule. We can then invoke the Get-NetFirewallRule PowerShell cmdlet to verify as shown in Figure 3. Enable-NetFirewallRule -DisplayGroup Remote Desktop Group Policy The chances are good that you want to standardize RDP behavior across all your infrastructure servers. Start by creating, linking and scoping a new Group Policy Object (GPO) that targets the servers that should share RDP server settings. Next, navigate to the following Group Policy path and add a new Restricted Groups entry (shown in Figure 4): Computer ConfigurationPoliciesWindows SettingsSecurity SettingsRestricted Groups You can customize the membership in the servers built-in Remote Desktop Users group; members of this group can establish RDP sessions to the server. Note that the local Administrators group (and, by extension, the Domain Admins global group) is automatically granted this privilege in Active Directory. The following three Group Policy settings govern: Windows Firewall incoming RDP exceptions User right to establish RDP sessions Requiring NLA Computer ConfigurationAdministrative TemplatesNetworkNetwork ConnectionsWindows FirewallDomain ProfileWindows Firewall: Allow Inbound Remote Desktop exceptions Computer ConfigurationAdministrative TemplatesWindows ComponentsRemote Desktop ServicesRemote Desktop Session HostConnectionsAllow user to connect remotely by using Remote Desktop Services Computer ConfigurationAdministrative TemplatesWindows ComponentsRemote Desktop ServicesRemote Desktop Session HostSecurityRequire user authentication for remote connections by using NLA Creating the Client Connection Windows Client and Windows Server both include the Microsoft RDP client, called Remote Desktop Connection. My favorite way to invoke this tool is to: Press WINDOWS KEYR Type mstsc (which stands for Microsoft Terminal Services Client) Press ENTER I show you the Remote Desktop Connection user interface in Figure 5.
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