关于
This skill provides a comprehensive guide and implementation patterns for setting up firewalls across diverse environments, including Linux hosts (UFW, nftables, iptables), major cloud providers (AWS, GCP, Azure), and Kubernetes. It helps engineers implement defense-in-depth strategies through stateful and stateless rules, egress filtering, and bastion host setups, while incorporating critical safety checklists to prevent accidental lockouts during configuration. Whether you are exposing a new web service or securing a private database, this skill ensures your network layer follows the principle of least privilege.
