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Static NAT Adds No Security

  • NAT is helpful in securing your network because it hides your internal network architecture from the hostile outside world. Since there is not a route from the outside world to the internal addresses and back trivial attacks will be stopped at the border. Static NAT on the other hand maps a particular externally routable address to a specific internal address. As such anyone connecting to that external address will be passed directly on to the internal network as if they had connected directly without NAT.
  • While the only machines that can be directly attacked are those that have a static mapping any time
    you make one machine more vulnerable you are making the entire network more vulnerable.

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