Patent ID: 7181540

Claim:
A system for securely transporting data to multiple domains comprising: a common channel for carrying data of a plurality of domains wherein said plurality of domains includes at least a first domain and a second domain; at least one switch through which data enters said common channel; at least one switch through which data exits said common channel; a first plurality of routers coupled to said at least one switch through which data enters said common channel; a second plurality of routers coupled to said at least one switch through which data exits said common channel; a first filtering means for filtering data traveling through said at least one switch through which data enters said common channel and said at least one switch through which data exits said common channel based on a first filtering criteria; a second filtering means for filtering data traveling through said plurality of routers coupled to said at least one switch through which data enters said common channel based on a second filtering criteria; a third filtering means for filtering data traveling through said plurality of routers coupled to said at least one switch through which data exits said common channel based on a third filtering criteria; wherein said first filtering means, said second filtering means, and said third filtering means prevent data designated for said first domain from transferring to said second domain and to prevent data designated for said second domain from transferring to said first domain.