10-06-2017, 07:04 AM
Implementing a Distributed Firewall
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Intro to Security
Computer/Network Security - The prevention and detection of unauthorized actions by users of computer systems*
But what does unauthorized mean?
It depends on the system s security policy
Firewalls
In most systems today, the firewall is the machine that implements the security policy for a system
A firewall is typically placed at the edge of a system and acts as a filter for unauthorized traffic
Filters tend to be simple: source and destination addresses, source and destination ports, or protocol (tcp, udp, icmp)
Distributed Firewall Concept
Security policy is defined centrally
Enforcement of policy is done by network endpoint(s)