An Evaluation of VoIP Traversal of Firewalls and NATs within an Enterprise Environment

@article{Stukas2004AnEO,
  title={An Evaluation of VoIP Traversal of Firewalls and NATs within an Enterprise Environment},
  author={Michael Stukas and Douglas C. Sicker},
  journal={Information Systems Frontiers},
  year={2004},
  volume={6},
  pages={219-228}
}