Cloud Firewall
A cloud firewall is a network security service that monitors and controls incoming and outgoing traffic to cloud-based resources, such as virtual machines, containers, or applications, based on predefined security rules. It operates as a virtual barrier in the cloud, protecting against unauthorized access, cyber threats, and data breaches by filtering traffic at the network level. Unlike traditional hardware firewalls, cloud firewalls are software-defined, scalable, and managed through cloud provider consoles or APIs.
Developers should learn and use cloud firewalls when deploying applications in cloud environments like AWS, Azure, or Google Cloud to enforce security policies, comply with regulations, and mitigate risks from attacks like DDoS or malware. They are essential for securing cloud infrastructure, especially in multi-tenant setups, by allowing fine-grained control over traffic flows between resources, such as isolating development and production environments or restricting access to sensitive databases.