Security Reference Guide — Doc. 9313A
Crestron Flex Phones • 3
Ports and Protocols
The following ports and protocols may be used by the device depending on the system design
and configuration.
Crestron Control Devices
Function
Destination Port
From (Sender)
To (Listener)
Notes
Crestron-
CIP
41794/TCP
Device
Control
System
Crestron Internet Protocol
Crestron-
SCIP
41796/TCP
Device
Control
System
Secure Crestron Internet
Protocol
HTTPS
49200/TCP
Remote
Device
Device
Web API for Crestron HTML5
User Interfaces
Common Ports
Function
Destination Port
From (Sender)
To (Listener)
Notes
NTP
123/UDP
Device
NTP Server
Network Time Protocol
(NTP)
SSH
22/TCP
Admin
Workstation
Device
Used for configuration
and console.
LDAP
389/TCP
Device
Admin Server
LDAPS
636/TCP
Device
Admin Server
HTTPS
443/TCP
Admin or End
User
Workstation
Device
Secure web configuration
HTTPS
443/TCP
Device
XiO Cloud®
Service
For XiO Cloud services
only and not required for
device functionality. A
persistent connection is
made via AMQP over
WebSockets. HTTPS
services such as routing
lookups and file transfers
may be used.