Linux+ V8 firewalld Firewall Configuration Quiz

1. How do you add a custom port to a firewalld zone?

Firewall-cmd --add-port=8080/tcp --permanent

Firewall-cmd --open-port=8080/tcp

Firewall-cmd --enable-port=8080

Firewall-cmd --port=8080/tcp

2. Which firewalld zone is appropriate for a home network with trusted devices?

Home

Public

External

Work

3. What command displays all services available in firewalld?

Firewall-cmd --get-services

Firewall-cmd --list-services

Firewall-cmd --show-services

Firewall-cmd --available-services

4. True or False: firewalld is a stateless firewall that does not track connection states.

True

False

5. Which protocol option is used when adding a port for UDP traffic in firewalld?

Udp

UDP

U

Datagram

6. How do you set a default zone in firewalld?

Firewall-cmd --set-default-zone=public

Firewall-cmd --default-zone=public

Firewall-cmd --change-zone=public

Firewall-cmd --zone-default=public

7. What does the 'dmz' zone in firewalld typically protect?

Publicly accessible servers with limited access to internal networks

Internal company networks

Trusted personal devices

All external internet traffic

8. Which command removes a service from a firewalld zone?

Firewall-cmd --remove-service=http --permanent

Firewall-cmd --delete-service=http

Firewall-cmd --disable-service=http

Firewall-cmd --block-service=http

9. True or False: You can assign multiple zones to a single network interface.

True

False

10. What is the default behavior of the 'public' zone in firewalld?

Deny all incoming traffic except explicitly allowed services

Allow all incoming traffic

Block all traffic completely

Allow only SSH traffic

11. What is the primary daemon that manages firewalld rules and policies?

Firewalld

Iptables

Nftables

Ufw

12. Which command lists all active zones and their associated interfaces?

Firewall-cmd --get-active-zones

Firewall-cmd --list-zones

Firewall-cmd --show-zones

Firewall-cmd --zone-status

13. What is a rich rule in firewalld?

A complex firewall rule with advanced filtering conditions

A rule that applies to wealthy organizations

A rule that opens all ports

A rule specific to wireless networks

14. True or False: firewalld rules are lost after a system reboot unless marked permanent.

True

False

15. Which file stores persistent firewalld zone configurations?

/etc/firewalld/zones/

/var/firewalld/rules/

/etc/iptables/

/etc/nftables/

16. What does the 'trusted' zone in firewalld allow by default?

All incoming traffic

Only SSH connections

Only DNS queries

No traffic at all

17. Which command adds a service permanently to the current zone in firewalld?

Firewall-cmd --add-service=http --permanent

Firewall-cmd --enable-service=http

Firewall-cmd --allow-service=http

Firewall-cmd --open-service=http

18. What is the purpose of firewalld zones?

Organize networks with different trust levels and apply rules

Encrypt data between network interfaces

Block all incoming traffic by default

Manage DNS resolution for domains

19. How do you reload firewalld configuration without losing active connections?

Firewall-cmd --reload

Firewall-cmd --complete-reload

Systemctl restart firewalld

Firewall-cmd --refresh

20. Which firewalld zone is typically used for untrusted networks with minimal access?

Public

External

Internal

Dmz

Linux+ V8 Linux Firewall Configuration with firewalld Quiz

1. How do you add a custom port to a firewalld zone?

2.

What first name or nickname would you like us to use?

2. Which firewalld zone is appropriate for a home network with trusted devices?

3. What command displays all services available in firewalld?

4. True or False: firewalld is a stateless firewall that does not track connection states.

5. Which protocol option is used when adding a port for UDP traffic in firewalld?

6. How do you set a default zone in firewalld?

7. What does the 'dmz' zone in firewalld typically protect?

8. Which command removes a service from a firewalld zone?

9. True or False: You can assign multiple zones to a single network interface.

10. What is the default behavior of the 'public' zone in firewalld?

11. What is the primary daemon that manages firewalld rules and policies?

12. Which command lists all active zones and their associated interfaces?

13. What is a rich rule in firewalld?

14. True or False: firewalld rules are lost after a system reboot unless marked permanent.

15. Which file stores persistent firewalld zone configurations?

16. What does the 'trusted' zone in firewalld allow by default?

17. Which command adds a service permanently to the current zone in firewalld?

18. What is the purpose of firewalld zones?

19. How do you reload firewalld configuration without losing active connections?

20. Which firewalld zone is typically used for untrusted networks with minimal access?