iptables ☆
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Description:
Linux kernel packet control tool
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Security
Tags: firewall networking security linux iptables nat
Install: brew install iptables
About:
Iptables is a powerful command-line utility for configuring the Linux kernel's netfilter firewall. It allows administrators to define rules for packet filtering, network address translation (NAT), and mangling of network traffic. This tool is essential for securing servers and managing network access on Linux systems.
Key Features:
  • Stateful packet inspection
  • Network Address Translation (NAT)
  • Extensive matching criteria
  • Connection tracking
  • Custom chain support
Use Cases:
  • Configuring firewall rules to protect servers
  • Setting up network address translation for sharing internet connections
  • Rate limiting network traffic to prevent abuse
Alternatives:
  • nftables – The modern successor to iptables, offering a simpler syntax and improved performance.
  • ufw – A user-friendly interface for managing iptables rules, ideal for simpler configurations.
Version History
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