The vSphere Web Client allows you to open and close firewall ports for each service or to allow traffic from selected IP addresses.
The following table lists the firewalls for services that are usually installed. If you install other VIBs on your host, additional services and firewall ports might become available.
| Service | Port | Comment |
|---|---|---|
| CIM Server | 5988 (TCP) | Server for CIM (Common Information Model). |
| CIM Secure Server | 5989 (TCP) | Secure server for CIM. |
| CIM SLP | 427 (TCP, UDP) | The CIM client uses the Service Location Protocol, version 2 (SLPv2) to find CIM servers. |
| DHCPv6 | 546 (TCP, UDP) | DHCP client for IPv6. |
| DVSSync | 8301, 8302 (UDP) | 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. |
| NFC | 902 (TCP) | 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. |
| Virtual SAN Clustering Service | 12345, 23451 (UDP) | Virtual SAN Cluster Monitoring and Membership Directory Service. Uses UDP-based IP multicast to establish cluster members and distribute Virtual SAN metadata to all cluster members. If disabled, Virtual SAN does not work. |
| DHCP Client | 68 (UDP) | DHCP client for IPv4. |
| DNS Client | 53 (UDP) | DNS client. |
| Fault Tolerance | 8200, 8100, 8300 (TCP, UDP) | Traffic between hosts for vSphere Fault Tolerance (FT). |
| NSX Distributed Logical Router Service | 6999 (UDP) | 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. |
| Virtual SAN Transport | 2233 (TCP) | Virtual SAN reliable datagram transport. Uses TCP and is used for Virtual SAN storage IO. If disabled, Virtual SAN does not work. |
| SNMP Server | 161 (UDP) | Allows the host to connect to an SNMP server. |
| SSH Server | 22 (TCP) | Required for SSH access. |
| vMotion | 8000 (TCP) | Required for virtual machine migration with vMotion. |
| vSphere Web Client | 902, 443 (TCP) | Client connections |
| vsanvp | 8080 (TCP) | VSAN VASA Vendor Provider. Used by the Storage Management Service (SMS) that is part of vCenter to access information about Virtual SAN storage profiles, capabilities, and compliance. If disabled, Virtual SAN Storage Profile Based Management (SPBM) does not work. |
| vSphere Web Access | 80 (TCP) | Welcome page, with download links for different interfaces. |
| RFB protocol | 5900-5964 (TCP) | Used by management tools such as VNC. |
| Service | Port | Comment |
|---|---|---|
| CIM SLP | 427 (TCP, UDP) | The CIM client uses the Service Location Protocol, version 2 (SLPv2) to find CIM servers. |
| DHCPv6 | 547 (TCP, UDP) | DHCP client for IPv6. |
| DVSSync | 8301, 8302 (UDP) | 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. |
| HBR | 44046, 31031 (TCP) | Used for ongoing replication traffic by vSphere Replication and VMware Site Recovery Manager. |
| NFC | 902 (TCP) | 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. |
| WOL | 9 (UDP) | Used by Wake on LAN. |
| Virtual SAN Clustering Service | 12345 23451 (UDP) | Cluster Monitoring, Membership, and Directory Service used by Virtual SAN. |
| DHCP Client | 68 (UDP) | DHCP client. |
| DNS Client | 53 (TCP, UDP) | DNS client. |
| Fault Tolerance | 80, 8200, 8100, 8300 (TCP, UDP) | Supports VMware Fault Tolerance. |
| Software iSCSI Client | 3260 (TCP) | Supports software iSCSI. |
| NSX Distributed Logical Router Service | 6999 (UDP) | 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. |
| rabbitmqproxy | 5671 (TCP) | A proxy running on the ESXi host that allows applications running inside virtual machines to communicate to the AMQP brokers running in the vCenter network domain. The virtual machine does not have to be on the network, that is, no NIC is required. The proxy connects to the brokers in the vCenter network domain. Therefore, the outgoing connection IP addresses should at least include the current brokers in use or future brokers. Brokers can be added if customer would like to scale up. |
| Virtual SAN Transport | 2233 (TCP) | Used for RDT traffic (Unicast peer to peer communication) between Virtual SAN nodes. |
| vMotion | 8000 (TCP) | Required for virtual machine migration with vMotion. |
| VMware vCenter Agent | 902 (UDP) | vCenter Server agent. |
| vsanvp | 8080 (TCP) | Used for Virtual SAN Vendor Provider traffic. |
