NETGEAR UTM5EW-100NAS, STM150EW-100NAS manual 582

ProSecure Unified Threat Management (UTM) Appliance

Table 149. Radio Settings screen settings (continued)

Field	Descriptions
Mode	The wireless modes that you can select depend on the radio’s operating
	frequency that you select.
	2.4 GHz	Specify the wireless mode in the 2.4-GHz band by making a
		selection from the drop-down list:
		• g and b. This is the default setting. In addition to 802.11b- and
		802.11g-compliant devices, 802.11n-compliant devices can
		connect to the wireless access point because they are
		backward compatible.
		• g only. 802.11g- and 802.11n-compliant devices can connect
		to the wireless access point, but 802.11n-compliant devices
		function below their capacity in 802.11g mode.
		802.11b-compliant devices cannot connect.
		• ng. 802.11g- and 802.11n-compliant devices can connect to
		the wireless access point. 802.11b-compliant devices cannot
		connect.
		• GreenField. Only 802.11n-compliant devices can connect to
		the wireless access point, and 802.1b- and 802.11g-compliant
		devices cannot recognize the wireless access point, which
		might cause interference. Therefore, use Greenfield mode only
		when you are sure that there are no or very few 802.1b- and
		802.11g-compliant devices in the wireless coverage area.
	5 GHz	Specify the wireless mode in the 5-GHz band by making a
		selection from the drop-down list:
		• a only. 802.11a- and 802.11n-compliant devices can connect
		to the wireless access point, but 802.11n-compliant devices
		function below their capacity in 802.11a mode.
		• na. This is the default setting. 802.11a- and 802.11n-compliant
		devices can connect to the wireless access point.
		• GreenField. Only 802.11n-compliant devices can connect to
		the wireless access point, and 802.1a -compliant devices
		cannot recognize the wireless access point, which might cause
		interference. Therefore, use Greenfield mode only when you
		are sure that there are no or very few 802.1a-compliant
		devices in the wireless coverage area.
Channel Spacing	For the na, ng, and Greenfield modes only, specify the channel spacing by
Note: na, ng, and	making a selection from the drop-down list:
	• 20/40MHz. Select this option to improve the performance. Some legacy
Greenfield modes only.	devices (that is, devices that function only in a, b, or g mode) can operate
This is a fixed field for a,	only in 20 MHz.
b, and g modes.	• 20MHz. Select this option if your network includes legacy devices. This is
	the default setting.
	Note: The channel spacing is fixed at 20 MHz for the a, b, and g modes.
Current Channel	This is a nonconfigurable field that shows the current channel if you have
	selected Auto from the Channel drop-down list.

Wireless Network Module for the UTM9S and UTM25S

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