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A packet in Iptables is treated in a certain chain sequence, as I have understood. I would like to know what chains apply in what order, and if anyone knows about any good illustrations of this on the net?
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A packet in Iptables is treated in a certain chain sequence, as I have understood. I would like to know what chains apply in what order, and if anyone knows about any good illustrations of this on the net?

Iptable rule sequence

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.