5.2

Table Of Contents
Table 5-2. Back-End Firewall Rules (Continued)
Source
Default
Port Protocol Destination
Default
Port Notes
Security server TCP Any RDP View desktop TCP 3389 Security servers connect to View desktops on TCP port
3389 to exchange RDP traffic.
Security server TCP Any MMR View desktop TCP 4927 Security servers connect to View desktops on TCP port
9427 to receive MMR traffic.
Security server TCP Any
UDP Any
PCoIP View desktop TCP 4172
UDP 4172
Security servers connect to View desktops on TCP port
4172 and UDP port 4172 to exchange PCoIP traffic.
View desktop UDP 4172 PCoIP Security server UDP Any View desktops send PCoIP data back to a security server
from UDP port 4172 .
The destination UDP port will be the source port from the
received UDP packets and so as this is reply data, it is
normally unnecessary to add an explicit firewall rule for
this.
Security server TCP 32111 USB-R View desktop TCP 4172 Security servers connect to View desktops on TCP port
32111 to exchange USB redirection traffic between an
external client device and the View desktop.
Security server TCP Any HTTP Transfer Server TCP 80 Security servers connect to View Transfer Servers on TCP
port 80 to download View desktop data to external local
mode clients and to exchange replication data.
Security server TCP Any HTTPS Transfer Server TCP 443 If you configure View Transfer Server to use SSL for local
mode operations and desktop provisioning, security
servers connect to View Transfer Servers on TCP port 443
instead of TCP port 80 to download View desktop data
to external local mode clients and to exchange replication
data.
Security server TCP Any HTTPS View desktop TCP 22443 If you use VMware Horizon View HTML Access, security
servers connect to View desktops on HTTPS port 22443
to communicate with the Blast agent.
TCP Ports for View Connection Server Intercommunication
Groups of View Connection Server instances use additional TCP ports to communicate with each other. For
example, View Connection Server instances use port 4100 to transmit JMS inter-router (JMSIR) traffic to each
other. Firewalls are generally not used between the View Connection Server instances in a group.
Understanding Horizon View Communications Protocols
Horizon View components exchange messages by using several different protocols.
Figure 5-5 illustrates the protocols that each component uses for communication when a security server is not
configured. That is, the secure tunnel for RDP and the PCoIP secure gateway are not turned on. This
configuration might be used in a typical LAN deployment.
VMware Horizon View Architecture Planning
74 VMware, Inc.