Stepping Stone Detection (SSD) can be used to trace back the real attacker in stepping-stone connection. Anomaly techniques are capable of identifying between normal and abnormal traffic. The collaboration of SSD and anomaly techniques enhanced the capability of detection of steppingstone connection. Several SSD approaches and anomaly techniques have been proposed in the literature. In this paper, we review these approaches and techniques. Furthermore, we suggest a potential future of anomaly techniques in SSD.