Intrusion Detection and Prevention Systems

The process of intrusion detection involves the monitoring of systems or networks for any signs and occurrences of events or incidents deemed either suspicious or in violation of to an organization's security policy or rule set. An "Intrusion Detection System (IDS)" is a hardware appliance or software that has the ability to detect signs of... Continue Reading →

Routers: Understanding The Basics

Routers   A router is a layer 3 (Network) device. Unlike hubs and switches that connect computers, servers, printers, or other peripheral systems together, a router connects networks together. Therefore, you can connect 2 or more LANs together and even connect two or more larger networks together in a WAN. There are several types of... Continue Reading →

Virtual Local Area Networks (VLANs)

Older Networks: Our LANs can get messy. On our typically older corporate networks, there were many switches that separated different organizational units of a company into separate broadcast domains. In essence, switches were not only used for connecting devices and peripherals, but to also group computers together based on job function or department roles. For... Continue Reading →

Port Mirroring on Switches

Modern switches have a lot of cool, useful features that make these devices simple to manage, but perhaps, more difficult to configure. In my last post about switches, I mentioned I'd go into a little more detail about the features that switches have to offer. One of the first features I mentioned was "port mirroring."... Continue Reading →

Switches Are The Way to Go

A "switch" is a Layer 2 (Data Link) device that largely replaced hubs in the early days of networking. These days, it's hard to imagine any network tech installing a hub over a switch. The greatest benefit of a switch over a hub is that is has "intelligence," well, managed switches do, at least. Managed... Continue Reading →

Why We Don’t Use Hubs Anymore

Hubs might appear to be Layer 2 (Data Link) devices, and I wouldn't blame you if you thought of them as such; however, hubs are actually Layer 1 (Physical) devices. Hubs are, in a sense, "dumb." They are unintelligent devices that simply provide connectivity to several devices. A long time ago, we used hubs as... Continue Reading →

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