A server is expensive to purchase, set up and operate on a large
scale; it remains a security solution for the perimeter:
Internet security
A network device with an embedded firewall, a router, switch,
or specialized encryption or QoS box, represents the future applying global
security policies: Intranet & extranet security
Network devices will be teamed with security policy servers,
with a centralized management, and will act as distributed
firewalls over the network.