6.7

Table 3‑3. Incoming Firewall Connections (Continued)
Port
Protoc
ol Service Description
5900 -5964 TCP RFB protocol
80, 9000 TCP vSphere Update
Manager
Table 3‑4. Outgoing Firewall Connections
Port Protocol Service Description
427 TCP, UDP CIM SLP The CIM client uses the Service Location Protocol, version 2
(SLPv2) to find CIM servers.
547 TCP, UDP DHCPv6 DHCP client for IPv6.
8301, 8302 UDP DVSSync DVSSync ports are used for synchronizing states of distributed
virtual ports between hosts that have VMware FT record/replay
enabled. Only hosts that run primary or backup virtual machines
must have these ports open. On hosts that are not using VMware
FT these ports do not have to be open.
44046, 31031 TCP HBR Used for ongoing replication traffic by vSphere Replication and
VMware Site Recovery Manager.
902 TCP NFC Network File Copy (NFC) provides a file-type-aware FTP service
for vSphere components. ESXi uses NFC for operations such as
copying and moving data between datastores by default.
9 UDP WOL Used by Wake on LAN.
12345 23451 UDP vSAN Clustering
Service
Cluster Monitoring, Membership, and Directory Service used by
vSAN.
68 UDP DHCP Client DHCP client.
53 TCP, UDP DNS Client DNS client.
80, 8200, 8100, 8300 TCP, UDP Fault Tolerance Supports VMware Fault Tolerance.
3260 TCP Software iSCSI Client Supports software iSCSI.
6999 UDP NSX Distributed
Logical Router
Service
The firewall port associated with this service is opened when NSX
VIBs are installed and the VDR module is created. If no VDR
instances are associated with the host, the port does not have to
be open.
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.
VMware ESXi Upgrade
VMware, Inc. 16