FIREWALLS Created and Presented by: Dawn Blitch & Fredda Hutchinson What is a Firewall? A Firewall is simply a program or hardware device that filters the information coming through the internet connection into your private network or computer system. History of Firewall
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Created and Presented by:
SMTP session hijacking
Operating system bugs
Denial of Service
Firewalls may only limit these items to an extent.
The level of security you establish will determine how many of these threats can be stopped by your firewall. The highest level of security would simply block everything, this would defeat the purpose of having an internet connection. Basic rule of thumb for all administrators is to first block everything and then implement rules which allow only certain information or packets to pass.