This will be our final post regarding the network fundamentals which I believe is invaluable to each and every network engineer. Not to worry though… there will be more articles where we will cover more services and configurations running over our network in great detail, we will also reference the Read more…
I am certain we all know of the Wi-Fi at our homes, or perhaps the Wi-Fi that children will help us with to connect onto at a restaurant. I am fascinated at how well we have adopted wireless technologies into our own lives. Even though you may understand that concept Read more…
A domain name system or DNS for short is an application that we use in order to resolve hostnames to IP addresses. Think about it… Wouldn’t it be weird if every website you visited you had to type in an IP address instead of typing in www.google.com? We have been Read more…
In this fundamental we will be looking at DHCP or the Dynamic Host Configuration Protocol. Ever wondered why when you plug an ethernet cable into your laptop or connect onto the WiFi that you have internet access? You already know that IP addresses are required in order to communicate over Read more…
Remember when we were discussing the OSI Model and we briefly touched on the transport layer? This is a follow-up of that as it is another fundamental to understand what TCP and UDP is as well as how both protocols function. TCP – Nothing wrong here! When you think about Read more…
What is subnetting and why is it useful for us? If an IP address is the street address of each network device then we could think of the subnet mask as the actual street. Whenever broadcast traffic is sent out to the network only devices within the specific subnet will Read more…
So what’s an IP Address? Well if we think about the OSI Model and we remember how switches talk to each-other using mac-addresses. We could say that IP addresses is the same equivalent and allows computers to communicate across the network. I want you to consider an IP Address as Read more…
If you’ve ever watched Lord of the Rings then I’m certain you get the reference. When I think of a firewall I can totally see Gandalf (our firewall) standing between all the bad things in the internet and our network. And if any traffic passing through is set to be Read more…
So we’ve covered the TCP/IP and the OSI Model, What a network is as well as basic switching, our next fundamental will cover routers and routing. Some network engineers base their entire careers off of this fundamental. It may be a bit strange in the beginning, but as always I Read more…
Hello Operator? Before we jump into the switches we use in our day to day lives at the office. I would like to take you back again to a time when we had telephone operators who would “switch” our calls for us. These operators had the job of picking up Read more…