Firewall 1
Overview
Admin Access
Rule Base
Routing
NAT
ARP
Authentication
GUIs
TroubleshootingCheckpoint
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Title 3
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Title 5
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Title 6
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Firewall Definition
A device that enforces a security policy for communication between
internal and/or external networks
It controls which machines or network users can connect to reach external
elements through the firewall
Note: A Firewall cannot protect against malicious authorized users or
connections that do not go through the firewall. There is no 100%
guarantee that it cannot be breached.
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