Classful Addressing/FLSM/VLSM/CIDR

Classful Addressing This addressing strategy is the oldest one used back in the days. Nowadays, we don't work with it but lecturers are still teaching it to help students understand and analyse the addressing strategies. Main idea of classful addressing is dividing IPs by certain subnet masks and create classes from them. There are five classes extracted by classful addressing and each of them has their own usages and attributes. This is an old addressing and there was a lot of wastage of IPs. The idea was, if you were a company that needed 200 IP addresses, a class C assignment…

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HTTPS and TLS (SSL 3+)

TLS is Next Generation SSL When people talk about SSL(Secure Socket Layers) protocol, what they actually mean is TLS(Transport Layer Security). TLS is the successor and the new name of SSL. SSL 3.1 is actually TLS 1.0. TLS 1.1 is SSL 3.2 and TLS 1.2 is SSL 3.3. TLS 1.3 is the latest version proposed on 21 March 2018. Now that you know these, let's get into TLS. What is TLS? TLS is a protocol operating directly on top of TCP layer. Although, there are implementations of it for Datagram Based Protocols like UDP. By working on TCP layer, protocols…

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