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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Information around sockets on a Linux system is often used to troubleshoot network and connectivity issues, as well as evaluate the health of a Linux host. There are a few...
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nmap, the Network Mapper is a utility that helps map networks. Duh…it was first released in 1998 and it supports Windows, Mac OS and several flavors of Linux. It’s a very...
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What is tcpdump? tcpdump is a tool that is used for TCP/IP packet analysis. It was first released in 1988 and has since become a very powerful and commonly used...
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From a networking perspective, some of the most basic information to know about a Linux box is the status of its network interfaces. In this blog post, I will describe...
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DNS resolution is one of the most basic functionalities on any host. On Linux, there are multiple ways to test if DNS works, and in this post we’ll review how DNS servers are configured and what commands you can use to test them. DNS server configuration Every host needs to…
In this post we are taking a step back from networking on Linux and talking about some basic commands that are necessary to navigate ourselves around it. Although we’ll be...
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In the early days, network engineers and regular Linux/Unix users, used to use telnet to connect to remote or local hosts. The main drawback of telnet is that, on un-secure...
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Linux and coding are becoming very valuable skills for network engineers that want to expand their horizons in new areas such as SDN, network automation, and DevOps. Introduction to Linux...
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