If data is the lifeblood of a company, bandwidth is the diameter of the veins through which this data travels. Cheesy medical analogies aside, a blockage or high-pressure bandwidth usage results in issues that compromise the integrity of your office wall to wall.
Unfortunately, no one template can guarantee 100-percent system stability. There are, however, guidelines any sysadmin can follow to define policies and procedures that proactively ensure your network doesn't have a random fire drill.
Most people in IT, especially security, have worked with some form of code. Whether it's for automating system tasks, performing network monitoring or developing full-fledged applications, understanding certain scripts is necessary to keeping support running every day.
CompTIA A+ certification gives you a basic foundation in networking, software and PC hardware. Server+ certification helps you dig deeper into those concepts as they relate to the server. The latter credential tells shops you have what it takes to be a server technician, server support specialist, server administrator or storage administrator.
Here's to you, sysadmins, and all that you do. Thanks for all of the troubleshooting, the config fixes, and the reboots. May your networks always be connected, may your servers always be up and may DNS errors never find you.
Scanning ports is very popular among cybercriminals. It’s often their first step of reconnaissance to discover services they can exploit and systems they can break into as they try to steal or destroy sensitive data. Two recent examples of major breaches illustrate just how handy port scanning is to threat actors:
If you are reading this, you are likely interested in or already utilize cloud solutions. Both Azure and AWS (Amazon Web Services) offer a variety of infrastructure as a service (IaaS), platform as a service (PaaS) and software as a service (SaaS) offerings. Selection between the two, with AWS the dominant market leader, is typically based on business requirements and online research or direct referrals (some of your contacts recommend a solution based on pricing, uptime or other). I could rehash vendor websites, favorable reviews, and other somewhat biased materials to prove the headline but, as always, I prefer to go my own route, bringing my own biases to the fore.
Over the past week, news broke about a rogue device that had gone unnoticed on NASA’s Jet Propulsion Lab (JPL) IT network. The fact that a Raspberry Pi went unnoticed for almost 10 months is a clear signal of network management issues and lackluster security policies in place within NASA, and other government agencies for that matter.
When troubleshooting problems or investigating potential security breaches, the Windows event log is a great place to start. Windows provides an extensive list of various event logs grouped by a provider with a sometimes staggering number of events recorded within. With all of these events being recorded, it's hard to figure out what's going on. One way to search event logs across not one but hundreds of servers at once is with PowerShell.
Often perceived as a precursor to Industry 4.0, the rollout of 5G, if the marketing is to be believed, will allow innovations that were previously restricted or unreliable due to lack of bandwidth. Speeds of up to 10Gbps are promised by telecom companies but since we have yet to experience real-life usage scenarios, this is mere speculation.
One of the more disheartening aspects of log collection within the Windows Operating system are the limited number of out of the box events related to security. It is often desirable to capture any unknown or malicious running processes, capture the source process for outbound connections, identify modifications to files and the registry, and to capture command and PowerShell commands that are run on a particular endpoint. Luckily for systems administrators, Microsoft provides a great tool for this type of log capture within the SysInternals suite called system monitor, or Sysmon.
If you are a systems administrator or a security engineer, it is probable you have a requirement to filter and forward Windows event logs either directly or hierarchically. There are many alternatives available to accomplish this goal, one of which is Windows Event Forwarding (WEF). In this article, you will learn to configure a simple source initiated WEF subscription which utilizes the HTTP protocol to forward events between a client and a collector in a single domain.
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