Security for Service Provider VoIP Networks
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Overview: Protection from external attacks, application abuse, viruses, unauthorized access, and interception or manipulation of voice, signaling, and management traffic - these are the issues troubling service providers as they move toward mass deployment of VoIP services. Those concerns have workable answers. The security principles and mechanisms outlined in this paper offer a blueprint for mitigating security concerns in a full range of VoIP network applications and architectures. This security strategy addresses network threats at multiple levels - for instance, from a firewall guardian to block intruders at the front gate, to encryption to shroud every packet in privacy.