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Firewall

A firewall provides computer and computer networks protection against intrusions from external computers. This system screens data packets that are shared with outside sources. A firewall contains pre-established rules to authorize, block or reject connections. These rules will reflect the information security policy implemented by your organization.

Implementing a firewall is fairly simple. However, to make sure it performs properly, it is essential to adequately maintain it. To achieve this, one needs to gain excellent knowledge of the company and its infrastructures as well as telecommunications, network protocols, operating systems and the various intrusion techniques. The person in charge must be sufficiently available to keep abreast of what is going on and quickly and adequately react to security alerts.