said operational data comprises a record of a unique address allocation to a user device attempting to access said computer network;

said enterprise data comprises credentials associated with local authentication at said user device;

the step of correlating said operational data with said enterprise data to obtain correlated data comprises associating said unique address and said credentials with authentication information stored in a single-sign-on server; and

the step of using said correlated data to improve security of said computer network comprises providing a user of said user device with single sign-on ability responsive to an indication of an appropriate match between said unique address and said credentials and said authentication information.