Security Reference Guide — Doc. 7693AC
AirMedia® Presentation Gateway • 15
Minimizing traffic from non-AirMedia devices can be challenging due to end user expectations on
wireless networks. There are several techniques to help ensure AirMedia traffic is prioritized:
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Keep AirMedia devices and traffic on their own VLANs and subnet, and keep the devices
routable from outside.
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Use quality-of-service features on switches and routers to prioritize AirMedia traffic as
per the ports listed in
Firewall Settings & Port Table (on page 26)
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Conduct network traffic flow analysis to identify network hot spots around the AirMedia
device.
If Bonjour® or multicast DNS services are to be blocked, the blocking needs to occur at the switch
level. If blocking occurs on a macOS or iOS sending device due to administrative policy regarding
firewall settings, the native mirroring connection to AirMedia receivers will not be possible
without the AirMedia app. Some organizations manage mDNS and Bonjour on their network
using specialized management tools that minimize broadcast chatter while still providing
services. These tools can occasionally interfere with device discovery and should be configured to
prevent such interference.
Disable Discovery via Multicast DNS Services
If the IT department requires multicast DNS services to be turned off, AirMedia discovery by
AirMedia applications can be disabled on the AirMedia Series 3, AM-200, and AM-300 devices.
For instructions on disabling AirMedia discovery on an AirMedia Series 3 receiver, refer to the
AirMedia Series 3 Receivers Product Manual
(Doc 9020).
For instructions on disabling AirMedia discovery on an AM-200 or AM-300, refer to the
(Doc. 8254).
NOTE:
Disabling AirMedia discovery only disables AirMedia device discovery by AirMedia sender
applications. Application users will have to manually input the address of the AirMedia receiver.
To disable all discovery functions related to Multicast DNS services, the Miracast feature should
also be disabled as Miracast leverages Multicast DNS services. When disabled, users will not be
able to present with Miracast.
For instructions on disabling Miracast on an AirMedia Series 3 receiver, refer to the
Series 3 Receivers Product Manual
(Doc 9020).
For instructions on disabling Miracast on am AM-200 or AM-300, refer to the
(Doc. 8254).
