Firewalls 5.3

What is the primary function of a firewall?

• To inspect network traffic and allow or block it based on rules

• To increase the speed of network traffic

• To enhance the graphical interface of the operating system

• To serve as a primary storage device

Which type of firewall operates up to OSI Layer 3?

• Stateful inspection firewall

• Application layer firewall

• Packet filtering (stateless) firewall

• Proxy server

What does a stateful inspection firewall use to make decisions about traffic?

• Virtual circuits or sessions

• The color of the packets

• The size of the packet only

• Random selection

Which firewall type is considered the slowest because it reassembles entire messages at the Application layer?

• Network-based firewall

• Packet filtering (stateless) firewall

• Stateful inspection firewall

• Application layer firewall

What feature helps prevent attackers from discovering your network through ICMP Echo requests?

• Stealth Mode

• Block ping to WAN

• UDP Flood

• TCP Flood

Which feature protects against SYN flood attacks?

• ICMP Notification

• Fragmented Packets

• TCP Flood

• Echo Storm Detect Rate

What is a common management practice when designing firewall packet filters?

• Use default settings without customization

• Open all ports by default

• Close all ports and open only those necessary

• Ignore port settings

What should you check if a host cannot communicate on the network?

• The brand of the host's network card

• The color of the network cable

• The host firewall settings

• The host's physical location

Which firewall type inspects encrypted packets, such as in SSL inspection?

• Network-based firewall

• Packet filtering (stateless) firewall

• Application layer firewall

• Stateful inspection firewall

What does a host-based firewall protect against?

• Attacks when there is no network-based firewall

• Physical damage to the host

• Power outages

• Hardware theft