Public DNS servers are great for everyday use, however, sometimes we just need to set up our own DNS server. Having your own server allows you to experiment, learn how...
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iPerf is an open source, free, network performance measurement tool. It works by simply sending traffic from one host to another and measuring the bandwidth that can be achieved. In...
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TheTrivial File Transfer Protocol (TFTP) was standardized in 1981, according to the RFC 1350. The goal of the designers was to build an FTP that is small in size and...
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Currently there are iPerf versions 2 and 3 which are actively maintained. iPerf 3 began with the goal of rewriting the code to make it more updated and maintainable.. When...
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In Debian-based Linux there are two popular Dynamic Host Configuration Protocol (DHCP) clients: dynamic host client, also known as dhclient, and DHCP client daemon, also known as dhcpcd. As a...
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We have covered many different aspects of WPA Supplicant in this blog, however, an overlooked aspect of it is what information it logs and how to read it. Let’s discuss...
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WPA supplicant is used to implement security protocols for wireless networks. In a previous blog post I explained how to use it on a WiFi network for different authentication methods....
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In our series “Linux for Network Engineers” we have been focusing mainly on subjects that are of interest to network engineers. In the following weeks we’ll cover some subjects with...
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In our blogs on Linux for Network engineers we’ve been talking mostly about individual commands and how to use them. One of the most powerful capabilities of Linux is the...
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The Linux kernel provides a type of packet filtering called netfilter. The most common and native interface to netfilter is the iptables utility. iptables is powerful and is included by...
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