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Computer Networks → Introduction to Computer Networks 14

What is firewall zoning
Dividing network into security zones with policies between
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What is inter-zone policy
Rules governing traffic between different security zones
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What is intra-zone policy
Rules governing traffic within same security zone
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What is network security policy lifecycle
Create review approve implement audit and update
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What is firewall rule cleanup
Removing unused or redundant firewall rules
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What is shadow rule in firewall
Rule that is never hit because earlier rule matches first
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What is implied rule in firewall
Built-in rule like implicit deny at end of policy
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What is stealth rule in firewall
Rule protecting firewall itself from direct access
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What is any-any rule risk in firewall
Allowing all traffic defeating purpose of firewall
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What is egress filtering importance
Preventing data exfiltration and limiting attack scope
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What is DMZ architecture benefit
Isolating public-facing servers from internal network
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What is network perimeter security evolution
From hard perimeter to zero trust with no implicit trust
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What is the most important skill in computer networks
Systematic troubleshooting combining theoretical and practical knowledge
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What is the conclusion about Computer Networks importance
Foundation for all modern computing and digital transformation
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