When you isolate an endpoint, you halt all network access on the endpoint except for traffic to Cortex XDR. This can prevent a compromised endpoint from communicating with other endpoints thereby reducing an attacker’s mobility on your network. After the agent receives the instruction to isolate the endpoint and carries out the action, Cortex XDR shows an Isolated check-in status. To ensure an endpoint remains in isolation, agent upgrades are not available for isolated endpoints.
IP-based file storage protocol traffic will also be blocked. This might affect endpoint functionality if the endpoint uses such mounts.
Network isolation is supported for endpoints that meet the following requirements:
Network isolation on Mac endpoints does not terminate active connections that were initiated before the agent was installed on the endpoint.
Network isolation on Linux endpoints is based on the defined IP addresses and ports.
Initiate an action to isolate an endpoint.
Go to Isolate.→ → → and select
You can also initiate the action (for one or more endpoints) from the Isolation page of the Action Center or from → → .
Enter a Comment to provide additional background or other information that explains why you isolated the endpoint.
After you isolate an endpoint, Cortex XDR displays the Isolation Comment on the → . If needed, you can edit the comment from the right-click pivot menu.
Select the target endpoint that you want to isolate from your network.
If needed, Filter the list of endpoints. To learn how to use filters, see Filter Page Results.
Review the action summary and click Done when finished.
In the next heartbeat, the agent will receive the isolation request from Cortex XDR.
To track the status of an isolation action, select→ → → → .
If after initiating an isolation action, you want to cancel, right-click the action and select. You can cancel the isolation action only if the endpoint is still in
Pendingstatus and has not been isolated yet.
After you remediate the endpoint, cancel endpoint isolation to resume normal communication.
You can cancel isolation from the Actions Center (Isolation page) or from → → . From either place right-click the endpoint and select → .
If file system operations become unresponsive during isolation, such as being unable to list folder content, unmount the mounted network shares.