6.5.1

Table 8‑3. Incoming Firewall Connections (Continued)
Port
Protoc
ol Service Description
53 UDP DNS Client DNS client.
8200, 8100,
8300
TCP,
UDP
Fault Tolerance Traffic between hosts for vSphere Fault Tolerance (FT).
6999 UDP NSX Distributed
Logical Router
Service
NSX Virtual Distributed 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.
This service was called NSX Distributed Logical Router in earlier versions of
the product.
2233 TCP vSAN Transport vSAN reliable datagram transport. Uses TCP and is used for vSAN storage
IO. If disabled, vSAN does not work.
161 UDP SNMP Server Allows the host to connect to an SNMP server.
22 TCP SSH Server Required for SSH access.
8000 TCP vMotion Required for virtual machine migration with vMotion. ESXi hosts listen on port
8000 for TCP connections from remote ESXi hosts for vMotion traffic.
902, 443 TCP vSphere Web Client Client connections
8080 TCP vsanvp vSAN VASA Vendor Provider. Used by the Storage Management Service
(SMS) that is part of vCenter to access information about vSAN storage
profiles, capabilities, and compliance. If disabled, vSAN Storage Profile Based
Management (SPBM) does not work.
80 TCP vSphere Web Access Welcome page, with download links for different interfaces.
5900 -5964 TCP RFB protocol
80, 9000 TCP vSphere Update
Manager
Table 8‑4. 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.
vSphere Upgrade
VMware, Inc. 251