Enterprise Mac Security: Mac OS X Snow Leopard

10.13. Summary

Layers of security breed resilient networks. When securing networks, layer your approach. Start from the center, the computer itself, and move outward, looking at which services should be accessible by which computers. Then, layer the security levels by grouping the computers and building policies to limit access on each of those groups. Determine your firewall policies, both internally and externally. Consider your network's physical layer as you implement security policies based on location within the network. This kind of layered approach gives strength to your network's security blueprint.