A firewall is considered a first line of defence in protecting private information.  It can be software or hardware based.


When connecting computers to the internet they potentially become visible to all other internet users.  A firewall sits between the internet and your computers, acting as the barrier to allow or block connections with other computers based on your predetermined rules.  Legitimate traffic is allowed through where as malicious traffic is prevented.


Today many firewalls are Unified Threat Management (UTM) devices – a security appliance integrating a range of security features into a single appliance. UTM appliances combine firewall, gateway anti-virus, and intrusion detection and prevention capabilities into a single platform. UTM is designed to protect users from blended threats while reducing complexity.


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