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<WHAT> The Domain Name System (DNS) is a protocol that translates domain names into IP addresses. Often referred to as the "phonebook of the internet," DNS simplifies navigation by allowing users to access websites using human-readable names instead ...
<WHAT> SSH (Secure Shell) is a networking protocol that provides an encrypted remote connection between a client and a server. This secure link allows for tasks such as copying files, downloading data, and configuring a host through an encrypted conn...
<WHAT> In this tutorial, I’ll demonstrate how to segment multiple networks into different Virtual Local Area Networks (VLANs). This not only improves security by minimizing the window of possible threats by isolating critical systems and public-facin...
DHCP <WHAT> Dynamic Host Configuration Protocol (DHCP) is a networking protocol that operates on UDP ports 67 and 68. DHCP allows hosts to automatically receive assigned IP addresses from a DHCP server instead of configuring them manually. This is ef...
<WHAT> Groups simplify user management by allowing users with similar access rights to share a group ID. Alongside user management, enabling specific users to have home directories while others don't, setting password expiration, and even modifying g...
<WHAT> I want to dive into automating simple tasks with Bash today. I’ve realized how much time I save using Bash scripts, and I’ve learned a ton about scripting. I enjoy learning Python and JavaScript, but one downside is that they often aren’t prei...
DMZ <WHAT> A Demilitarized Zone (DMZ) is a network that separates the internal network from the external network. I like to think of a DMZ network as a security vestibule or a mantrap of a building. The building will resemble a corporate network, the...
<WHAT> Hot Standby Router Protocol (HSRP) is a Cisco proprietary First Hop Redundancy Protocol (FHRP) that provides high network availability by allowing multiple routers to work together to maintain access across the network. One router is active wh...
<WHAT> Let’s talk about how to use the Open Shortest Path First (OSPF) routing protocol to share routes with neighboring routers. It’s way more efficient than setting up static routes. OSPF is a link-state routing protocol, which means that each rout...