Follow a Connection
Part of the Stopping the Spread section of Coddy's Cybersecurity journey. Lesson 1 of 20.
You cleaned unwanted programs in the previous section. Now you will investigate the paths those programs use to reach other computers. The earlier cleanup and account protections are still in place.
A connection record gives you a source, a destination and a port. In this practice example:
seclab inspect connections demo-uploadYou should see:
demo-upload:
Source: practice-laptop
Destination: parcel-cache
Port: 443
Process: demo-helper
Credential: -
Group: -
Ip: -
Allowed: yes
Reason: allowed
Rule: 1The source is practice-laptop. The destination is parcel-cache, and port 443 is the service it contacted. The process field tells you which program opened the connection.
Port 443 is commonly used for secure web traffic, but that does not make every connection to it safe. Check who is connecting, where they are going and whether the activity is approved.
Record a destination using its machine name:
seclab answer destination parcel-cacheYou should see:
Recorded your answer to destination.Challenge
EasyTicket from Sam, IT lead
A newly enrolled dispatch-pc is contacting an outside server as well as Lumen’s archive. Identify the outside connection’s destination, port and process. Record them as destination, port and process. Keep the approved dispatch backup and checkout working while you investigate.
Try it yourself
All lessons in Stopping the Spread
1Trace the Connection
Follow a ConnectionTest a RouteFollow the Whole OrderInside the CompanyOrders Without Payment2Close the Unwanted Route
Destination RulesRule OrderOutbound RulesAllow the Needed WorkTwo Unwanted Routes3Contain More Than One Computer
Isolate a ComputerThe Exposed PasswordFollow the SpreadKeep Customers WorkingTwo Active Computers