Cisco PIX Firewall
Five major characteristics of the Cisco Security Appliance design make it a leading-edge,
high-performance security solution:
■ Secure real-time embedded system
■ Adaptive Security Algorithm
■ Cut-through proxy
■ Security Context
■ Redundancy
Application
Presentation
Session
Transport
Network
Data Link
Physical
Source
Application
Presentation
Session
Transport
Network
Data Link
Physical
Stateful Packet Inspection
Firewall
Application
Presentation
Session
Transport
Network
Data Link
Physical
Destination
State
Table