Date Added: Dec 2012
Today with the Internet available as a general tool, access to any publicly reachable network is a way for the legit users to leverage network resources. On the other hand, it is a way for hackers and attackers to exploit a network whether it is for competitive, financial, revenge or for that matter any malicious purpose. Intrusion prevention is a key component of any security strategy in today's IT infrastructures. It adds a indispensable layer for defense in depth strategy. Firewalls or authentication systems alone are no longer sufficient to cope with modern day attacks since, firewalls only deny malicious traffic from an unauthorized source however, does not have the capability to stop malicious traffic from authorized end points/sources.