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Threat Manager Assignment Policy Restrict Network Option | Feature Education

Overview

The Alert Logic® Threat Manager™ assignment policy functionality has an option to "restrict network" by specifying a subnet mask. The purpose of the restrict network functionality is to limit networks and IP addresses used by an agent to connect to an appliance.

Reasons to Use the Restrict Network Option

Appliances and hosts running an agent may belong to multiple networks, and therefore will have multiple IP addresses. When an agent is assigned to an appliance, it will get a list of all IP addresses that the appliance has and will randomly choose one to use to connect to the appliance. If the address that is selected is on a network that the agent is not on, the agent will not be able to connect to the appliance. Therefore, it may be necessary for the agent to use one network to connect to its appliance rather than another.

By specifying or restricting the subnet, the user has control over which address the agent will use to connect to the appliance. Without the restrict network option, the agent will randomly select an address and the appliance may not be accessible by that address for that host.

Further, the restrict network option allows the traffic captured by the agent to be sent back to the appliance on a specific interface. This could be used to prevent the captured traffic from using bandwidth on the main network interfaces.

Enabling the Restrict Network Option

If you would like to enable the restrict network option on your Threat Manager appliance, complete the following steps:

  1. In the Alert Logic console, click Threat Manager from the drop-down list at the top of the page.

  2. Under Policies on the left-hand side of the page, click Assignment.

  3. Click the edit icon on the far right of the appliance assignment that you'd like to apply the restrict network option to.

    appliance_edit.png

  4. Check the Restrict Network box.

    restrict_network.png
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