January 2015
Intermediate to advanced
432 pages
13h 23m
English
Content preview from Linux® Firewalls: Enhancing Security with nftables and Beyond, Fourth Edition
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4. nftables: The Linux Firewall Administration Program
Chapter 3, “iptables: The Legacy Linux Firewall Administration Program,” examined iptables, the longtime administration program for Linux firewalls. The syntax and many of the options within iptables were covered there. This chapter examines the new Netfilter Tables (nftables) program. The nftables program became available as part of the mainline Linux kernel beginning with version 3.13.
Differences between iptables and nftables
Within the kernel, nftables represents a significant departure from the iptables system of filtering. nftables replaces the functionality in not only iptables but also ip6tables for IPv6, arptables for ARP filtering, and ebtables for Ethernet bridge filtering. The ...
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