What do firewalls do?

A firewall is a network security system designed to prevent unauthorized access to or from a private network. The word originally referred literally to a wallFirewall security technology, first introduced to computer networks in the late 1980s for Windows, Mac OS or Linux exist to guard any network against hacks, cyber attacks, and other unauthorized user access. A firewall can be a stand-alone machine or software in a router or server.

The network firewall is the initial line of defense for traffic that passes in and out of a network. The firewall examines traffic to ensure it meets the security requirements set by the organization, and unauthorized access attempts are blocked. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria. A security software suite can contain different types of software such as anti-virus, anti-spyware, firewall and child protection applications. Firewalls are intended to block threats from outside your network, but can sometimes block communication between devices on your network and can cause problems when using network printers. In addition to your security software's firewall, your operating system also has a firewall for the same purpose.

The failure of the traditional firewall to live up to its impenetrable image is not limited to the relative strength or weakness of individual firewall products. While some standalone firewalls are clearly more secure than others are, none are capable of adequately protecting corporate assets on their own. It is a critical mistake to assume that simply erecting any standalone firewall in front of a private network is sufficient to protect it from attack.

Organizations under constant attack cannot afford to choose between security and maintaining a high-performance business infrastructure. From branch to campus to deep within internal segments, to physical and virtual data centers, your extended enterprise needs security that won't compromise efficiency.

Old-style protection techniques and firewalls were by no means meant for these day’s cloud-integrated infrastructures and workloads. They couldn’t deliver branch places of work direct access to your cloud programs. They often don’t help cloud-friendly consumption fashions, and that they don’t have the scalability and versatility that cloud-hosted applications requirement.

Difficulty unidentified extortions with a comprehensive suite of advanced protection including IPS, ATP, Sandboxing, Dual AV, Web and App Control, Anti-phishing, a full-featured Web Application Firewall and others. Automatically responds to incidents by instantly identifying and isolating infected systems until they can be cleaned up. Firewalls called next-generation firewalls (NGFW), work by filtering network and Internet traffic based upon the applications or traffic types using specific ports.