Lumen Stays Open

Part of the Stopping the Spread section of Coddy's Cybersecurity journey. Lesson 20 of 20.

Challenge

Medium

Ticket from Sam, IT lead

Lumen’s temporary shop received a new popup-till. Investigate its outside connection and preserve evidence while the responsible process runs. Clean that process, its file and its startup before loyalty data leaves. Keep approved receipt printing and both shops’ checkout working through a restart and the later retry. Do not undo the earlier server restrictions.

Try it yourself

Terminal

All lessons in Stopping the Spread

1Trace the Connection

Follow a Connection Test a Route Follow the Whole Order Inside the Company Orders Without Payment

4Recover and Verify

Prove the Block Recover in Stages Report the Impact Review the BoundaryLumen Stays Open

2Close the Unwanted Route

Destination Rules Rule Order Outbound Rules Allow the Needed Work Two Unwanted Routes

3Contain More Than One Computer

Isolate a Computer The Exposed Password Follow the Spread Keep Customers Working Two Active Computers