The present document describes the security relationships between the elements on the IPCablecom network. The general goals of the IPCablecom network security document and any implementations that encompass the requirements defined herein should be:
? Secure network communications. The IPCablecom network security must define a security architecture, methods, algorithms and protocols that meet the stated security service requirement. All media packets and all sensitive signalling communication across the network must be safe from eavesdropping. Unauthorized message modification, insertion, deletion and replays anywhere in the network must be easily detectable and must not affect proper network operation.
? Reasonable cost. The IPCablecom network security must define security methods, algorithms and protocols that meet the stated security service requirements such that a reasonable implementation can be manifested with reasonable cost and implementation complexity.
? Network element interoperability. All of the security services for any of the IPCablecom network elements must inter-operate with the security services for all of the other IPCablecom network elements. Multiple vendors may implement each of the IPCablecom network elements as well as multiple vendors for a single IPCablecom network element.
? Extensibility. The IPCablecom security architecture, methods, algorithms and protocols must provide a framework into which new security methods and algorithms may be incorporated as necessary.