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

iptables VS nftables 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 […]

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Blocking IP addresses in Linux with iptables

Block IP addresses in Linux (with iptables and ipset) Most system administrators will already be familiar with iptables. It is around for quite a while, and by default enabled within the Linux kernel. Within this article we are going to configure iptables to block one or multiple IP addresses. This may come in handy when you get repeating port scans or see failed login attempts in your log files. Check existing iptables configuration The first step is to validate existing iptables rules. We will […]

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