Network Services

Walk Like a Packet… Talk Like a Packet

For sometime now, I’ve gotten several questions on how a data flows from one end-device to another. Whether it’s from a student, colleague, and even customers. Interestingly enough – I’ve heard that this question is also asked as part of technical interviews for various IT positions (Pre-Sales, NOC, SOC, SD-WAN, etc…) In all likelihood this question comes up all the…

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Network Services

Web Servers – Start your NGIN…X

These days Web Servers are more than just that.  Web Servers can be used for a variety of things, including be a repository for files that can be used by your infrastructure devices, such as switches, compute, and storage. In this blog we’ll be installing the NGINX Web application on a CentOS VM (yes…I know).  As a note – the…

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Network Services

My name is DNS & Time Check with NTP, Part 2

Next up is NTP – which stands for Network Time Protocol and the server it runs on… (you guessed it!) Is called an NTP Server.  The purpose of NTP is to synchronize the time of all devices within a domain and to provide ‘timestamps’ based on the services that utilizes them. Per David L. Mills, ‘…NTP is intended to synchronize…

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Network Services

DHCP to the Rescue…using Linux

From home users to advance IT professionals – All of us have ran across obtaining an IP address dynamically for our devices; whether if it’s from our ISP for Internet home connectivity, when we connect to WiFi at our favourite coffee shop (Dunkin Cold Brew for me), or even when a new client is brought onto the network within a…

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Network Services

No Password SSH?… No Problem!

Have there been a time when you wish you didn’t have to type a password for ‘every’ SSH session you commit when logging into a device? Sure SSH is the preferred, secured way to log in… But there will be times when entering a password would be cumbersome (e.g. pushing updates, automation, scripting, etc.) In this blog-post I’ll show you…

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