A system and method for secure group communications is provided. One embodiment provides a method for implementing a virtual private group network. The method includes creating a virtual private group definition on a policy server, establishing a plurality of secure connections between the policy server and a plurality of group nodes, sending a copy of the virtual private group definition from the policy server to the group nodes, sending a shared traffic encryption key from the policy server to each of the group nodes, and sharing secure communication information among the group nodes using the shared traffic encryption key, wherein each group node is included in the virtual private group definition.