Security software that blocks unauthorized access to your computer or network. Like a security guard for your digital data.
A firewall prevents malicious software from connecting to your computer from the internet.
All provide network traffic filtering to block or allow connections. AWS Network Firewall, Azure Firewall, and OCI Network Firewall are managed, stateful firewall services with centralized policy control. GCP’s native Cloud Firewall Rules are distributed, VPC-level rules (stateful) applied to instances and networks; for advanced next-generation features, GCP commonly pairs rules with third-party firewall appliances or Cloud IDS/partner solutions.