The present invention provides a message-oriented middleware solution for securely transmitting messages and files across public networks unencumbered by intervening network barriers implemented as security measures. It also provides a dynamic, dedicated, application level VPN solution that is facilitated by the message-oriented middleware. Standard encryption algorithms are used to minimize the threat of eavesdropping and an Open-Pull Protocol (OPP) that allows target nodes to pull and verify the credentials of requestors prior to the passing of any data. Messaging can be segregated into multiple and distinct missions that all share the same nodes. The security network's architecture is built to resist and automatically recover from poor, slow, and degrading communications channels. Peers are identifiable by hardware appliance, software agent, and personally identifiable sessions. The security network provides a dynamic, private transport for sensitive data over existing non-secure networks without the overhead and limited security associated with traditional VPN solutions.