As described in a recent GCN article titled “It’s time to repeal and replace network access control”, the days of NAC’s viability as a security solution are numbered. The rise of cloud and the growing “zero trust”  movement have left NACs out in the cold. Today’s Network Access Control were built for authentication and authorization in a trusted, local network or over a centralized WAN- concepts that have proven cumbersome, prone to breach, and expensive. Software Defined Perimeters, like Trustgrid, offer enhanced security, a network not limited by geography or firewalls, and a cost structure that is rapidly disrupting the traditional security marketplace