6.5.1

Table Of Contents
Table 35. Outgoing Firewall Connections (Continued)
Port Protocol Service Description
5671 TCP rabbitmqproxy A proxy running on the ESXi host. This proxy allows applications
that are running inside virtual machines to communicate with the
AMQP brokers that are running in the vCenter network domain.
The virtual machine does not have to be on the network, that is,
no NIC is required. Ensure that outgoing connection IP addresses
include at least the brokers in use or future. You can add brokers
later to scale up.
2233 TCP vSAN Transport Used for RDT traffic (Unicast peer to peer communication)
between vSAN nodes.
8000 TCP vMotion Required for virtual machine migration with vMotion.
902 UDP VMware vCenter
Agent
vCenter Server agent.
8080 TCP vsanvp Used for vSAN Vendor Provider traffic.
9080 TCP I/O Filter Service Used by the I/O Filters storage feature
Table 36. Firewall Ports for Services That Are Not Visible in the UI by Default
Port
Proto
col Service Comment
5900 -5964 TCP RFB protocol The RFB protocol is a simple protocol for remote access to graphical user
interfaces.
8889 TCP OpenWSMAN
Daemon
Web Services Management (WS-Management is a DMTF open standard for
the management of servers, devices, applications, and Web services.
NFS Client Firewall Behavior
The NFS Client firewall rule set behaves differently than other ESXi firewall rule sets. ESXi configures
NFS Client settings when you mount or unmount an NFS datastore. The behavior differs for different
versions of NFS.
When you add, mount, or unmount an NFS datastore, the resulting behavior depends on the version of
NFS.
NFS v3 Firewall Behavior
When you add or mount an NFS v3 datastore, ESXi checks the state of the NFS Client (nfsClient)
firewall rule set.
n
If the nfsClient rule set is disabled, ESXi enables the rule set and disables the Allow All IP
Addresses policy by setting the allowedAll flag to FALSE. The IP address of the NFS server is
added to the allowed list of outgoing IP addresses.
vSphere Security
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