Peer Blocking in P2P Networks: Improving Security and Scalability. Computers Peer Blocking in P2P Networks: Improving Security and Scalability. Support Book November 5, 2011 0 Peer blocking is a technique used in peer-to-peer (P2P) networks to restrict access to specific peers or... Read More Read more about Peer Blocking in P2P Networks: Improving Security and Scalability.