firewall management

For many systems administrators and IT professionals, managing security is a top priority. As more services migrate to the cloud, the ability to effectively manage network traffic through firewall rules has become crucial. In this comprehensive guide, we'll focus on how you can manage firewall rules for your cloud instances using Linux Bash. Whether you're running your cloud instances on AWS, Azure, Google Cloud, or any other provider, the core principles of firewall management we'll discuss here remain largely the same. Most Linux distributions come with powerful tools such as iptables, nftables, or firewalld, which can be managed through the command line. Here, we'll mainly focus on iptables due to its wide usage and availability.