Open a device-to-device SSH session This lab uses two source routers and a target that accepts secure shell logins. Verify reachability from both sources and check which source the target allows. From the allowed source, check that a wrong username and a wrong password each close the login. Sign in with the authorized account and verify the target prompt and privilege level. Exit the remote session and confirm that the original router prompt returns. Try the same account from the other source and verify that the access list blocks the session.