The upsurge of cyber warfare has ushered voluminous research to its characterization and conduct. Although this research is critical, it is imbued with significant gaps in the knowledge, especially pertaining to the restoration of peace and security in the aftermath. In this article, we introduce the concept of cyber peacekeeping with emphasis on protecting civilians and restoring peace post cyber warfare. This work outlines why cyber peacekeeping is essential, the opportunities and challenges it presents, and provide pointers to significantly related research articles. The article concludes with some of the key findings from the literature and suggests avenues for future research efforts.