Each device is assigned to a device Category. Two system categories exist: LAN and WAN. Administrators can create their own. By default, devices are assigned to the WAN and LAN categories based on the Local IP Settings.
The Category defines the maximum number of connections all members of the Category can have established at any given point in time. Categories are hierarchical, meaning the maximum number of connections includes connections established by parent Categories. For example, assume Category A is permitted a maximum of two connections, and Categories B, C and D are each permitted a maximum of one connection. If Categories B, C and D share the same parent, Category A, there can be only two open connections amongst all Category B, C and D devices at any one time.
Categories must be created before assigning them to devices. To create a new category, follow these steps:
Select the Devices tab under the Admin tab.
In the Categories table, click the Add Category button, 
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Enter the category label.
If the category has a parent, select it from the pull-down list.
Enter the maximum number of connections. For an unlimited number of connections, enter no value or zero.
Click Save.
If prompted, restart the task manager.
A category assigned to one or more devices cannot be deleted. To remove an existing category, remove the category from all devices, find the entry in the Categories table and click the Delete button, 
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To assign a category to a new device, follow these steps:
Select the category from the pull-down list in the Devices table.
To change the category for an existing device, follow these steps:
Click the Edit button, 
, for the device in the Devices table.
In the Category column, select the new category from the pull-down list.
Click the Save button.
For each device, you can override the maximum number of connections defined by the Category the device belongs to by performing the following steps:
From the Devices table, click the Edit button, , in the device’s row.
In the device details section on the device edit page, enter the maximum number of connections this device can allocate in the Maximum Connections column.
Click the Save button.