CompTIA A+ Certification Core 1 (220-1101) - Firewalls and Servers

The video tutorial explores various application protocols beyond the web, such as SSH, FTP, and email. It emphasizes the importance of understanding ports and firewalls in network connections, detailing the journey of an IP packet from a client to a server. The tutorial discusses firewall configurations for both servers and clients, highlighting the necessity of keeping certain ports open for servers. It also covers security considerations for public-facing servers, explaining why home routers typically block incoming port 80.

Which of the following is NOT an application protocol mentioned in the video?

• SSH

• FTP

• SMTP

• HTML

What is the primary role of a firewall on a server?

• To block all incoming traffic

• To ensure all ports are closed

• To allow all outgoing traffic

• To manage and filter incoming and outgoing traffic

When a client sends a request to a server, which port is typically used for HTTP traffic?

• 80

• 22

• 443

• 21

Why can't incoming port 80 be blocked on a web server?

• Because it is a secure port

• Because it is used for outgoing traffic

• Because it is essential for serving web pages

• Because it is used for FTP

What type of firewall is typically used on public-facing servers to monitor for malicious activities?

• Proxy firewall

• Packet-filtering firewall

• Stateful firewall

• Stateless firewall

Why do home routers typically block incoming port 80?

• Because home networks usually don't host web servers

• Because it is a secure port

• Because it is used for email traffic

• Because it is used for FTP traffic

What should a server ensure about the ports it is listening on?

• They should all be closed

• They should be open for incoming traffic

• They should be open for outgoing traffic

• They should be blocked by the firewall