Back to basics #5 – TCP/IP tracing and routing
Reading Time: < 1 minute The last subject in the TCP/IP knowledge that remained, was tracing and routing. In short – how does a request reach the destination? I have read all the books, and watched all the videos. After doing that the decision was simple – there’s just no need to write. Just watch the linked YouTube video and you’re good to go. Enjoy!
Back to basics #4 – NAT and private networks
Reading Time: 4 minutes NAT is the sole reason why we still can use the internet today. With IPv4 limited number of IP addresses, introduction of private networks saved the day. At least until IPv6 takes over the world. Today I am going to take a quick look at what this whole NAT is all about. NAT scene setup
Back to basics #3 – IP
Reading Time: 4 minutes Today we will continue our short review of TCP/IP basics. In the previous article I have just scratched the surface. Today, let’s concentrate on some deeper concepts. All hail IP&CIDR! What are you doing exactly IP? To start with – below I am posting again the layered model of the networking stack (thank you Wikipedia).
Back to basics #2 – TCP/IP 101
Reading Time: 3 minutes Recently, as I was preparing for AWS certifications, all kinds of networking concepts seemed to pop out everywhere. I was afraid to open the fridge. I was worried that some kind of VPC configuration and routing table will jump right at me 😉 Building on that let’s dive into the very basics of what this
Back to basics #1 – Big O notation
Reading Time: 3 minutes I am going to start the “Back to basics” series with something really basic – Big O notation. I know, I know, quite simple, even trivial, but it’s good to go back to the real basics once in a while. Without further ado – let’s go! What’s the Big O? In short – Big O notation – is a way