An unannounced visitor on :8080 was redirected to the cloakroom. · A persistent caller on :3000 was offered tea and asked to wait. · A handshake without an invitation on :443 was politely declined. · An anonymous parcel arriving at :5173 was returned to its sender. · A masquerading process on :22 was shown the side gate. · A scheduled visitor on :6379 was admitted through the trade door. · A loitering connection on :9000 was invited to leave its card.