Configure the Palo Alto Networks Terminal Services Agent
for User Mapping
Use the following procedure to install and configure the TS agent on the terminal server. To map all your users, you must install the TS agent on all terminal servers that your users log in to.
- If you are using version 7.0 or later of the TS agent, make sure to disable any Sophos anti-virus software on the TS agent host. Otherwise, the source ports allocated by the TS agent will be overwritten.
- If you are installing the TS agent version 8.0 or later on a Windows Server 2008 R2, download and install the security advisory patchon the server before installing the TS agent. Otherwise, the TS agent service fails to launch with the following error written to the logs:servicefails with error 577.
- Download the TS agent installer.
- Log in to the Palo Alto Networks Customer Support Portal.
- Select.UpdatesSoftware Updates
- SetFilter BytoTerminal Services Agentand select the version of the agent you want to install from the corresponding Download column. For example, to download the 8.1 version of the agent, selectTaInstall-8.1.1.msi.
- Save theTaInstall.x64-x.x.x-xx.msiorTaInstall-x.x.x-xx.msifile (be sure to select the appropriate version based on whether the Windows system is running a 32-bit OS or a 64-bit OS) on the systems where you plan to install the agent.
- Run the installer as an administrator.
- Open the WindowsStartmenu, right-click theCommand Promptprogram, and selectRun as administrator.
- From the command line, run the .msi file you downloaded. For example, if you saved the .msi file to the Desktop you would enter the following:C:\Users\administrator.acme>cd DesktopC:\Users\administrator.acme\Desktop>TaInstall-8.0.0-1.msi
- Follow the setup prompts to install the agent using the default settings. The setup installs the agent inC:\ProgramFiles (x86)\Palo Alto Networks\Terminal Server Agent.To ensure correct port allocation, you must use the default Terminal Server agent installation folder location.
- When the installation completes,Closethe setup window.If you are upgrading to a TS Agent version that has a newer driver than the existing installation, the installation wizard prompts you to reboot the system after upgrading in order to use the new driver.
- Define the range of ports for the TS Agent to allocate to end users.TheSystem Source Port Allocation RangeandSystem Reserved Source Portsfields specify the range of ports that will be allocated to non-user sessions. Make sure the values specified in these fields do not overlap with the ports you designate for user traffic. These values can only be changed by editing the corresponding Windows registry settings. The TS agent does not allocate ports for network traffic emitted by session 0.
- Open the WindowsStartmenu and selectTerminal Server Agentto launch the Terminal Services agent application.
- SelectConfigurein the side menu.
- Enter theSource Port Allocation Range(default 20000-39999). This is the full range of port numbers that the TS agent will allocate for user mapping. The port range you specify cannot overlap with theSystem Source Port Allocation Range.
- (Optional) If there are ports/port ranges within the source port allocation that you do not want the TS Agent to allocate to user sessions, specify them asReserved Source Ports. To include multiple ranges, use commas with no spaces, for example:2000-3000,3500,4000-5000.
- Specify the number of ports to allocate to each individual user upon login to the terminal server in thePort Allocation Start Size Per Userfield (default 200).
- Specify thePort Allocation Maximum Size Per User, which is the maximum number of ports the Terminal Services agent can allocate to an individual user.
- Specify whether to continue processing traffic from the user if the user runs out of allocated ports. By default, theFail port binding when available ports are used upis selected, which indicates that the application will fail to send traffic when all ports are used. To enable users to continue using applications when they run out of ports, clear this check box. Keep in mind that this traffic may not be identified with User-ID.
- (Optional) Assign your own certificates for mutual authentication between the TS agent and the firewall.
- Obtain your certificate for the TS agent for your enterprise PKI or generate one on your firewall. The private key of the server certificate must be encrypted. The certificate must be uploaded in PEM file format.
- Add a server certificate to TS agent.
- On the TS agent, selectServer Certificateand clickAdd.
- Enter the path and name of the certificate file received from the CA or browse to the certificate file.
- Enter the private key password.
- ClickOKand thenCommit.
- Configure and assign the certificate profile for the firewall.
The TS agent uses a self-signed certificate on port 5009 with following information:Issuer: CN=Terminal Server Agent, OU=Engineering, O=Palo Alto Networks, L=Santa Clara, S=California, C=USSubject: CN=Terminal Server Agent, OU=Engineering, O=Palo Alto Networks, L=Santa Clara, S=California, C=US
- Selectto Configure a Certificate Profile.DeviceCertificate ManagementCertificate ProfileYou can only assign one certificate profile for Windows User-ID agents and TS agents. Therefore, your certificate profile must include all certificate authorities that issued certificates uploaded to connected Windows User-ID and TS agents.
- Selectand click the edit button to assign the certificate profile.DeviceUser IdentificationConnection Security
- Select the certificate profile you configured in the previous step from the User-ID Certificate Profile drop-down.
- Commityour changes.
- Configure the firewall to connect to the Terminal Services agent.Complete the following steps on each firewall you want to connect to the Terminal Services agent to receive user mappings:
- Selectand clickDeviceUser IdentificationTerminal Server AgentsAdd.
- Enter aNamefor the Terminal Services agent.
- Enter the IP address of the WindowsHoston which the Terminal Services agent is installed.When you configure a TS agent connection, the Best Practice is to set theHostand anyAlternative IP Addressesto a static IP address that never changes or to an FQDN that resolves to a static IP address.
- Enter thePortnumber on which the agent will listen for user mapping requests. This value must match the value configured on the Terminal Services agent. By default, the port is set to 5009 on the firewall and on the agent. If you change it here, you must also change theListening Portfield on the Terminal Services agentConfigurescreen.
- Make sure that the configuration isEnabledand then clickOK.
- Committhe changes.
- Verify that theConnectedstatus displays as connected (a green light).
- Verify that the Terminal Services agent is successfully mapping IP addresses to usernames and that the firewalls can connect to the agent.
- Open the WindowsStartmenu and selectTerminal Server Agent.
- Verify that the firewalls can connect by making sure theConnection Statusof each firewall in the Connection List isConnected.
- Verify that the Terminal Services agent is successfully mapping port ranges to usernames by selectingMonitorin the side menu and making sure that the mapping table is populated.
- (Windows 2012 R2 servers only) Disable Enhanced Protected Mode in Microsoft Internet Explorer for each user who uses that browser.This task is not necessary for other browsers such as Google Chrome or Mozilla Firefox.Perform these steps on the Windows Server:
- Start Internet Explorer.
- Selectand scroll down to the Security section.Internet optionsAdvanced
- ClearEnable Enhanced Protected Mode.
- ClickOK.In Internet Explorer, Palo Alto Networks recommends that you do not disable Protected Mode, which differs from Enhanced Protected Mode.
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