![]() Ports are incoming unless otherwise noted. The following table lists the TCP and UDP ports that are opened during Horizon Agent installation. For more information, see Microsoft Knowledge Base (KB) article 875357. You can use Microsoft group policy settings to manage local firewall exceptions. Choose RADIUS as Application type and click on Create App button. Go to Apps and click on Add Applicaton button on the top right corner. If you use a virtual machine template as a desktop source, firewall exceptions carry over to deployed desktops only if the template is a member of the desktop domain. Enable Two-Factor Authentication (2FA) for VMware Horizon View VDI to increase security level. ![]() ![]() This driver causes the Windows firewall to treat the ports as closed. A special Microsoft-signed driver on RDS hosts blocks inbound traffic to these ports from external sources. This block of ports is for VMware Blast internal use in Horizon Agent. On RDS hosts, the Windows firewall rules for Horizon Agent show a block of 256 contiguous UDP ports as open for inbound traffic. TCP port 4002 HTTP, TCP port 80 HTTPS, TCP port 443 MMR/CDR, For multimedia redirection and client drive redirection, TCP. For more information, see the Horizon Installation document. If you change a default port after installation, you must manually reconfigure the firewall rules to allow access on the updated port. If you change the RDP port number after installation, you must change the associated firewall rules. If you instruct the Horizon Agent installer not to enable Remote Desktop support, it does not open ports 331 and you must open these ports manually. The Horizon Client then forms a protocol session connection to a Horizon Agent running in a virtual desktop, RDSH server, or physical machine. The Horizon Agent installer configures the local firewall rule for inbound RDP connections to match the current RDP port of the host operating system, which is typically 3389. You can deploy multiple UAGs and have them behind a load balancer, or point individual UAGs to separate Horizon Connection servers. The core components of Horizon include a VMware Horizon Client authenticating to a Connection Server, which brokers connections to virtual desktops and apps. Port 443 is enabled by default for client connections. 14 View Client View security server 443 TCP HTTPS access. See Notes and Caveats for TCP and UDP Ports Used by View. This port carries all the PCoIP traffic including USB tunneling, audio. 80 TCP SSL (HTTPS access) is enabled by default for client connections, but port 80 (HTTP access) can be used in certain cases. To open the default network ports, the Horizon Agent installer optionally configures Windows firewall rules on virtual desktops and RDS hosts. For communications between the View Horizon client and the security server. ![]()
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