Reference Guide

Communication security settings
This section contains the following topics:
Topics:
• Port Usage
Port Usage
The following sections outline the collection of network ports and the corresponding services that may be found on the
appliance. The appliance functions as a network client in several circumstances, for example, in communicating with a vCenter
Server. In these instances, the appliance initiates communication and the network infrastructure will need to support these
connections.
NOTE: For additional information about ports, see Knowledge Base Article 542240, PowerStore: Customer Network
Firewall Rules - TCP/UDP Ports. Go to https://www.dell.com/support/kbdoc/en-us/542240. The Customer Network
Firewall Rules tool enables you to filter and review the list of firewall rules and ports that are relevant to your PowerStore
deployment.
Appliance network ports
The following table outlines the collection of network ports and the corresponding services that may be found on the appliance.
Table 2. Appliance network ports
Port Service Protocol Access Direction Description
22 SSH client,
SupportAssist
Connect Home
TCP Bi-directional
● Allows SSH access (if enabled).
● Required for SupportAssist Connect
Home.
If closed, management connections using
SSH will be unavailable.
25 or 587 SMTP TCP Outbound Allows the appliance to send email. If
closed, email notifications will be
unavailable.
26 SSH client TCP Bi-directional SSH access to port 22 is redirected to
this port. If closed, management
connections using SSH will be unavailable.
53 DNS TCP/UDP Outbound Used to transmit DNS queries to the DNS
server. If closed, DNS name resolution will
not work.
80, 8080, 8128 SupportAssist TCP Outbound Used for SupportAssist Proxy connection.
123 NTP TCP/UDP Outbound NTP time synchronization. If closed, time
will not be synchronized among
appliances.
162 or between
1024 - 49151
SNMP UDP Outbound SNMP communications. If closed, storage
system alert mechanisms which rely on
2
26 Communication security settings