Table 10 Storage system network ports (continued)
Service Protocol Port Description
versions of the Windows OS (pre-
Windows 2000). Clients with legitimate
access to the storage system SMB
services must have network connectivity
to the port for continued operation.
SNMP Unix Multiplexer TCP 199 SNMP communications. If closed,
storage system alert mechanisms which
rely on SNMP will not be sent.
Service Location Protocol (SLP) TCP/UDP 427 Allows hosts (or other resources) to
discover available services provided by a
storage system.
HTTPS TCP 443 Secure HTTP traffic to the Unisphere
and Unisphere CLI. If closed,
communication with the array will be
unavailable.
For SMI-S, used for array management;
however, port 5989 is the default port
used for this purpose.
SMB TCP 445 SMB (on domain controller) and SMB
connectivity port for Windows 2000 and
later clients. Clients with legitimate
access to the storage system SMB
services must have network connectivity
to the port for continued operation.
Disabling this port disables all SMB-
related services. If port 139 is also
disabled, SMB file sharing is disabled.
DHCP (IPv6 only) UDP 546 DHCP(v6) Client. If closed, dynamic IP
addresses will not be assigned using
DHCP.
DHCP (IPv6 only) UDP 547 DHCP(v6) Server. If closed, dynamic IP
addresses will not be assigned using
DHCP.
FTP TCP 1024:65535 Used for passive FTP. Port 1024:65535
is related to data while port 1025:65535
is related to management.
mountd (NFS) TCP/UDP 1234 Used for the mount service, which is a
core component of the NFS service
(versions 2, 3, and 4) and is an important
component of the SP to NAS Server
interaction.
NAS, VAAI-NAS TCP 2049 Provides NAS datastores for VMware
and is used for VAAI-NAS. If closed,
Communication Security
36 EMC Unity All Flash, EMC Unity Hybrid, EMC UnityVSA 4.0 Security Configuration Guide