What is application visibility and control?
Application visibility and control functionality protects critical high-speed networks against application-level threats. These threats are both existing and emerging, and can penetrate and proliferate in the network.
Problems Application Visibility and Control Address
Web-based applications have changed the dynamics of security. Previously, specific applications were associated with specific protocols and ports, making policy enforcement at the host level relatively straightforward. Now, virtually all traffic is HTTP-based (ports 80/443), as shown below. Web applications that can be accessed from anywhere by employees, contractors, partners, and service providers through the firewall create access control challenges. Applications such as instant messaging, peer-to-peer file sharing, Webmail, social networking, and IP voice/video collaboration evade security mechanisms by changing communications ports and protocols, or by tunneling within other commonly used services (for example, HTTP or HTTPS). Organizations need control over the applications and traffic on their networks to protect their assets against attacks and manage bandwidth.