SentinelOne: Contain Hosts

This guide helps you set up your SentinelOne device and grant necessary permissions so that you can enable the Contain Hosts auto remediation in Workbench.

This guide is the first step of a larger process to enable auto remediations. After completing the steps on this page, you will be instructed to return to the Enable an Auto Remediation in Workbench guide to finish your setup.

How It Works

If our SOC identifies a host that must be contained, Workbench completes the action automatically. You have the option to restrict these actions to specific hosts by configuring an allow or deny list (the hosts must first be added as context, and then the list can be configured in Workbench; see Step 2).

Endpoints Used

SentinelOne API

web/api/v2.1, full network isolation

Method	Endpoint	Purpose
GET	web/api/v2.1/agents	Look up agent ID by hostname; pre-check to read status
POST	/web/api/v2.1/agents/actions/disconnect	Disconnect (isolate) the agent from the network
GET	web/api/v2.1/agents	Poll status until disconnected; also read last active date

Revert (reconnect): POST /web/api/v2.1/agents/actions/connect.

Step 1: Allow Appropriate Permissions in Your EDR Console

Make sure you assign all API permissions in the SentinelOne Setup for Workbench guide, including the IR Team role, with Network Quarantine permissions all enabled.

Step 2: Update Your Context

If you do not want to specify any hosts for a "do not contain" or "always contain" list, and instead wish for Expel to automatically contain all identified hosts, skip to Step 3.

Working with your Customer Success Manager, prepare to create an allow or deny list by adding hosts as org context for your environment. You will then be able to select those hosts as "Never contain" or "Always contain" assets when you enable the auto remediation in Workbench. In this instance, the context update process is usually accomplished by sending us a .csv file.

If our SOC identifies a host that must be contained and you have created either an allow ("Always contain") or deny ("Never contain") list in Workbench, any hosts falling outside of those parameters are assigned to you as actions rather than being contained automatically.

Step 3: Return to the Main Setup Guide

Your SentinelOne device is now ready for the Contain Hosts auto remediation. You should now do one of the following:

• If you do not need to set up any other devices for this auto remediation, you can return to the Enable an Auto Remediation in Workbench guide to finish Step 2 of the process.
• If you need to set up additional devices for this auto remediation, or wish to use this device with multiple auto remediations, be sure to complete those setup guides as well before returning to the Enable an Auto Remediation in Workbench guide to finish Step 2 of the process. Make sure to follow the setup guide that is specific to your auto remediation, as device setup instructions are unique to each auto remediation and device.