Dell PowerConnect W Clearpass 100 Software Guía de usuario descargar pdf (Pagina 158)

158158 | Roles and Policies

Dell PowerConnect W-Series Aruba Instant 6.2.1.0-3.3 | User Guide

QoS for Microsoft Office OCS and Apple Facetime

Voice and video devices use a signaling protocol to establish, control, and terminate voice and video calls. These

control or signaling sessions are usually permitted using pre-defined ACLs. If the control signaling packets are

encrypted, the OAW-IAP cannot determine the dynamic ports are used for voice or video traffic. In these cases, the

OAW-IAP has to use an ACL with the classify-media option enabled to identify the voice or video flow based on a

deep packet inspection and analysis of the actual traffic.

Microsoft OCS

Microsoft Office Communications Server (OCS) uses Session Initiation Protocol (SIP) over TLS to establish,

control, and terminate voice and video calls.

Apple Facetime

When an Apple device starts a Facetime video call, it initiates a TCP session to the Apple Facetime server over port

5223, then sends SIP signaling messages over a non-default port. When media traffic starts flowing, audio and video

data are sent through that same port using RTP. (The audio and video packets are interleaved in the air, though

individual the sessions can be uniquely identified using their payload type and sequence numbers.) The RTP header

and payload also get encapsulated under the TURN ChannelData Messages. The Facetime call is terminated with a

SIP BYE message that can be sent by either party.

The following table lists the ports used by Apple Facetime. Facetime users need to be assigned a role where traffic is

allowed on these ports.

Port Packet Type

53 TCP/UDP

443 TCP

3478-3497 UDP

5223 TCP

16384-16387 UDP

16393-16402 UDP

Table 26:

Ports Used by the Apple Facetime Application

Configuring Access Rules

You can configure access rules using Instant UI or CLI.

In the Instant UI

1. Select an existing wireless or wired profile. Depending on the network profile selected, the Edit <WLAN-Profile>

or Edit Wired Network window is displayed.

You can also configure access rules in the Access tab of the New WLAN and New Wired Network

windows when configuring a new profile.

2. In the Access tab, slide to Network-based using the scroll bar to specify access rules for the network.

3. Click New to add a new rule. The New Rule window is displayed.

4. In the New Rule window, specify the following parameters:

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