Cisco ASA: All-in-One Firewall, IPS, and VPN Adaptive Security Appliance

Foreword

Network security is at a critical juncture where no single technology can solve the problem in silos. Hundreds of millions of dollars are being spent in reactively solving the virus, worms, malware problem and the rapid propagation of these vile threats. Recognizing this, Cisco has modeled the Self-Defending Network (SDN) similar to the way our bodies protect us and deal with diseases.

The SDN has several protective and integrated layers—VPNs, firewalls, intrusion prevention, and anomaly mitigation. When combined with advanced virtualization, deeper packet intelligence, and behavioral linkages with end systems, the SDN is able to proactively prevent dangerous elements from causing havoc on networks. But akin to the human body, no network ...