Configuring the network for screen sharing

Network administrators need to configure the network so users can share their devices’ screens. Use the following information to configure the network for screen sharing. This information applies when using AirPlay, Google Cast, Miracast, and SMART Mirror client apps to share.

Tip 

Get some guidance on how to set up for success with screen sharing.

Important 

  • For display’s with SMART’s iQ software, you’ll also need to configure the network so all of iQ's features function properly. See Configuring your organization’s network for a SMART Board display with iQ.

  • SMART strongly recommends that you contact the network equipment manufacturer for more information about network configurations that support screen sharing.

  • SMART Mirror marks its media streams with standard DSCP values to support Quality of Service (QoS). If the network recognizes DSCP tags, this allows audio and video traffic to be prioritized for smoother performance.

For remote connections, the receiver and client devices need to be able to access the internet through these ports:

  • TCP 80

  • TCP 443

  • UDP 53

  • UDP 123 (Network Time Protocol)

Note 

Even if the network is open, the ports listed above need to be open for SMART Mirror.

Enable the following ports for using AirPlay when screen sharing:

Port

TCP or UDP

Description

80

TCP

Outbound HTTP

443

TCP

Outbound HTTPS

554

TCP/UDP

Real Time Streaming Protocol (RTSP)

3689

TCP

Digital Audio Access Protocol (DAAP)

5353

TCP/UDP

Multicast DNS (mDNS)

7000

TCP

Picture sharing

7100

TCP

Display mirroring

7010

TCP

Display mirroring

7011

TCP

Display mirroring

Bonjour is the Apple standards-based network technology designed to help devices and services discover each other on the same network. Although Bonjour is most commonly used to discover services and devices on smaller networks, it can also be configured for use on larger networks by using a Bonjour gateway or similar technology. Networks using such features for AirPlay should be configured to advertise both _airplay._tcp and _raop._tcp services. Even though it’s possible to use advanced DNS configurations for advertising some Bonjour services on enterprise networks, AirPlay requires live device discovery using the methods described in AirPlay discovery.

Important 

If devices will be connected to a different network than the display, Bluetooth must be enabled on both the device and the display before trying to connect. Otherwise, the device must be on the same network as the display to connect. Learn more about troubleshooting BLE discovery using AirPlay and SMART Mirror.

Enable the following ports for using Google Cast when screen sharing:

Port

TCP or UDP

Description

80

TCP

Outbound HTTP

443

TCP

Outbound HTTPS

1900

UDP

SSDP

5353

TCP/UDP

Multicast DNS (mDNS)

8008

TCP

Google Cast Discovery

8009

TCP

Google Cast Discovery

Enable the following ports for using any of the SMART Mirror client apps and its web client app when screen sharing:

Port

TCP or UDP

Description

53

UDP

Outbound HTTP

80

TCP

Outbound HTTP

443

TCP

Outbound HTTPS

1-65535

TCP

The SMART Mirror client app selects and uses an available port.

1025-65535

UDP

The SMART Mirror client app selects and uses an available port.

When screen sharing over the internet with the SMART Mirror client app, the following fully qualified domain names (FQDNs) must be allowed in the firewall:

  • smartmirror.link

  • netcheck.joinmontage.com

  • *.displaynote.com

If Layer 7 filtering or a proxy with protocol filtering has been applied to the ports above, then administrators will need to allow the following protocols:

  • HTTP

  • HTTPS

  • DTLS

  • XMPP

  • Bonjour protocols for AirPlay and Google Cast

  • SRTP

  • DNS

  • STUN

  • TURN

  • ICE