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What's a Firewall?

What's a Firewall?. A security system that acts as a protective boundary between a network and the outside world Isolates computer from the internet using a "wall of code" Inspects each individual "packet" of data as it arrives at either side of the firewall

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What's a Firewall?

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  1. What's a Firewall? • A security system that acts as a protective boundary between a • network and the outside world • Isolates computer from the internet using a • "wall of code" • Inspects each individual "packet" of data as it arrives at either side of the firewall • Inbound to or outbound from your computer • Determine whether it should be allowed to pass or be blocked

  2. Rules Determine WHO ? WHEN ? WHAT ? HOW ? INTERNET My PC Secure Private Network Firewall

  3. Functions of Firewall: • Filtering the incoming and outgoing traffic on network • Preventing from IP Spoofing • Blocking some specific traffic from entering the network • Blocking and permitting access to a pool of IP addresses • Preventing denial of service attacks

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