Cisco: IOS basics
Cisco: IOS basics The boot, the behaviour and its use. Boot process Before we get into the boot process, here are few things you need to know: ROM = Read…
Basics of WiFi
Basics of WiFi Wavy, invisible and fast! WiFi is a wireless medium meant to transmit information based on the IEEE 802.11 standard it uses IEEE 802 standard and is thus…
Firewalls and UTM’s
Firewalls and UTM's What are they, what can they do and what's the difference? What is a firewall and UTM? Look at firewalls like castles. In where the firewall, like…
Cisco: Packet Tracer
Cisco: Packet Tracer Making learning networking easy and affordable for anyone and everyone! What is Packet Tracer? As Cisco describes on their website: "Cisco Packet Tracer is a comprehensive networking…
The OSI-model
The OSI-Model Browser, ports, cables and whatnot! From seven to one and vice versa The OSI (Open Systems Interconnection) Model is a framework for standardising the functions of networking equipment.…
Hubs, Routers and Switches
Hubs, Switches and Routers The dumb, the smart and the know-it-all Ethernet hubs An ethernet hub is an layer one device on the OSI-model. An ethernet hub operates simply by…
Network troubleshooting and tools
Network troubleshooting and tools Ping, traceroute, nameserver lookups, SNMP and more...This page is about the tools used for troubleshooting and day-to-day management of networks. Be it loss of connection, devices…
What is NAT?
What is NAT? One-to-One, One-to-Many, NAT, PAT, Static, DNAT, SNAT, STUN This page is about network address translation, also better known as NAT. The details this page goes in about…
Difference of VLANs and subnets
The difference of VLANs and subnets Can two VLANs be on a subnet? What about the other way around? I met some people who think that VLANs and subnets are…
IPv4 subnetting made easy
IPv4 subnetting made easy The what, the why and the how. This post is helpful for people studying for CCT/CCNA! What is subnetting and how does it work? What is…