Communication Security
Service
SNMP Unix Multiplexer
Service Location Protocol (SLP)
HTTPS
SMB
DHCP (IPv6 only)
DHCP (IPv6 only)
FTP
mountd (NFS)
NAS, VAAI-NAS
EMC Unity All Flash, EMC Unity Hybrid, EMC UnityVSA 4.0 Security Configuration Guide
36
Table 10 Storage system network ports (continued)
Protocol
TCP
TCP/UDP
TCP
TCP
UDP
UDP
TCP
TCP/UDP
TCP
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.
199
SNMP communications. If closed,
storage system alert mechanisms which
rely on SNMP will not be sent.
427
Allows hosts (or other resources) to
discover available services provided by a
storage system.
443
Secure HTTP traffic to the Unisphere
and Unisphere CLI. If closed,
communication with the array will be
unavailable.
Note
For SMI-S, used for array management;
however, port 5989 is the default port
used for this purpose.
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.
546
DHCP(v6) Client. If closed, dynamic IP
addresses will not be assigned using
DHCP.
547
DHCP(v6) Server. If closed, dynamic IP
addresses will not be assigned using
DHCP.
1024:65535
Used for passive FTP. Port 1024:65535
is related to data while port 1025:65535
is related to management.
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.
2049
Provides NAS datastores for VMware
and is used for VAAI-NAS. If closed,
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