AWS, JavaScript, React - Deploy Web Apps on the Cloud - Strict Network Firewall Policy

This video tutorial guides viewers through creating a strict network firewall policy for a Linode instance. It covers setting default inbound policies to DROP, configuring inbound rules for HTTP, HTTPS, DNS, and database connections, and adding an ICMP rule. The tutorial emphasizes the importance of security by denying all traffic except explicitly permitted connections, ensuring a secure production environment.

What is the primary goal of creating a strict network firewall policy?

• To allow all incoming and outgoing traffic

• To reduce server load

• To enhance security by specifying permissible connections

• To increase network speed

What should the default inbound policy be set to for better security?

• DROP

• ACCEPT

• ALLOW

• DENY

Which port is used for HTTP traffic?

• 3306

• 53

• 80

• 443

What is the purpose of enabling HTTPS traffic?

• To block all incoming traffic

• To enable secure, encrypted data transfer

• To increase server speed

• To allow unencrypted data transfer

Which protocol is used for DNS queries?

• Both TCP and UDP

• UDP only

• ICMP

• TCP only

For which database systems is port 3306 used?

• SQLite

• MySQL and MariaDB

• MongoDB

• PostgreSQL

What is the role of ICMP in network communication?

• To transfer files

• To report network errors

• To encrypt data

• To manage DNS queries