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…
Category: Network Services
My name is DNS & Time Check with NTP, Part 1
Aside from a DHCP Server – Two other important Network Services are DNS and NTP. In my previous Blog; DHCP to the Rescue, I show how to build and configure one based on Linux CentOS. Within the configurations, I showed how to add the DNS and NTP servers for the subnet to which an IP address will be assigned to…
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…
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…
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…