Virtual Firewall What is a Virtual Firewall? A virtual firewall is a software-based security solution that monitors and controls traffic between virtual machines or cloud environments, providing the same protection as hardware firewalls. Explanation Virtual firewalls are deployed in virtualised environments, offering scalability and flexibility to secure modern cloud-based and hybrid infrastructures. Practical Example of a Virtual Firewall A company uses a virtual firewall to segment its cloud infrastructure, ensuring secure communication between virtual machines.