Beginners Guide to nftables Traffic Filtering

The replacement of iptables is known as nftables. In this introduction, we learn to install nftables and configure it, to secure your Linux systems.

Summary of Beginners Guide to nftables Traffic Filtering

Traffic filtering with nftables Many Linux administrators became familiar with iptables and ip6tables. Less familiar are tools like arptables and ebtables. Meet the successor of them all: nftables, a packet filtering framework, with the goal to replace all the previous ones. After reading this guide you will be able to configure your own firewall configuration. Step by step we will show how nftables work. Although no knowledge of iptables is needed, we will share some differences with iptables where applicable.

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Differences between iptables and nftables explained

An overview of the differences between firewall technologies iptables and nftables. We highlight the major differences like simplicity and management.

Summary of Differences between iptables and nftables explained

The seasoned Linux administrator will be familiar with iptables, the network traffic filter. If you ever configured a Linux system with an ethernet bridge configuration, you might even have worked with ebtables. Or possibly you wanted to filter ARP traffic and used arptables? Newcomer nftables has arrived, with the purpose to replace iptables, ip6tables, ebtables and arptables. As with every big upcoming change, it is good to know the differences. We explain what makes nftables different to iptables, and why you want to adopt it in the near future.

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Exporting nftables rules and configuration

nftables has an easy way to export firewall rules via the nft command line utility. By using the export parameter with json or xml, we can export it in the right format.

Summary of Exporting nftables rules and configuration

The usage of nftables will slowly grow in the upcoming years, with the goal to become the successor of iptables. Where iptables rules are harder to parse, nftables comes by default with an exporting facility. Exports formats include JSON and XML. Command syntax When using the command line utility nft for the first time, it looks a little bit unfriendly to the user. No suggestions on what to do, nor clear help on often used commands.

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