8-10?

Three Core Characteristics of All Firewalls

Resistant to attack, sole transit point, and enforces access control policies.

Packet Filtering Firewall

A firewall that filters packets based on IP addresses, ports, and protocols.

Stateful Firewall

A firewall that tracks the state of active network connections using state tables.

Application Gateway Firewall

A firewall that filters traffic at the application layer, often acting as a proxy.

NAT Firewall

A firewall that hides internal IP addresses by translating them to public addresses.

Next-Generation Firewall (NGFW) Application Control

Provides granular identification, visibility, and control of behaviors within applications.

NGFW Reputation Filtering

Restricts web and web application use based on the reputation of the site.

Four Considerations for Network Defense

Network core security, perimeter security, endpoint security, and communications security.

Default Firewall Policy Best Practice

Deny all traffic by default and permit only needed services.

Firewall Boundary Best Practice

Position firewalls at security boundaries to segment networks.

Firewall Physical Security Best Practice

Ensure that physical access to the firewall hardware is strictly controlled.

Firewall Administration Best Practice

Monitor firewall logs and practice formal configuration change management.

Primary Protection Scope of Firewalls

Primarily protect against technical attacks originating from outside the network.