Tutorials on networking, security, servers, backup, email and AI
Step-by-step guides in plain language for IT managers and business owners, from network segmentation and firewall rules to backup testing and server health monitoring.
An AI Adoption Roadmap for Your Company: From Small Pilot to Broad Use
Instead of rushed purchases or endless waiting, bring AI in step by step: pick the right problem, prepare data, run a small pilot, evaluate honestly and scale in a controlled way.
3 min readRead tutorial →Computer Vision in Business: From Cameras to Quality Control
Computer vision lets software analyze images and video, from reading license plates to spotting defective products. Learn its uses, limitations and infrastructure needs.
3 min readRead tutorial →Writing Good Prompts for AI: Principles and Examples
The quality of an AI chatbot's answer depends largely on the instruction you give it. With a few simple principles and a real example, write more precise and useful prompts.
3 min readRead tutorial →A Company AI Usage Policy: What to Write and How to Enforce It
Your employees are probably using AI already. A short, clear policy defines which tools are allowed, with which data, and who is responsible for the results.
3 min readRead tutorial →AI in Customer Support: Faster Answers Without Losing Quality
Chatbots, auto-drafted replies and ticket triage can speed up support, as long as you know where they help and where they can damage customer trust.
3 min readRead tutorial →An AI Assistant on Company Documents (RAG): How It Works and What the Risks Are
RAG lets a language model answer from your company's own documents. Before launching it, understand its architecture, weak points and the access and security controls it needs.
3 min readRead tutorial →AI in Network and Server Monitoring (AIOps): Detecting Anomalies Before Failure
Instead of fixed thresholds, AIOps learns normal network and server behavior and flags anomalies sooner. See what data it needs, where it helps and where it gets it wrong.
3 min readRead tutorial →How IT Teams Can Use AI: From Writing Scripts to Troubleshooting
AI assistants can free up IT team time on scripting, log reading and documentation, as long as their output is reviewed and no sensitive data goes into them.
3 min readRead tutorial →Hardware for AI: GPU, Memory, Storage and Power
An AI server is not a file or database server. From GPU memory and RAM to UPS capacity and rack cooling, check these before you buy so no money or time is wasted.
3 min readRead tutorial →Running AI Models on Your Own Company Server: Pros, Cons and Prerequisites
Open models can run on an in-house server so data never leaves the company, but that takes serious hardware, upkeep and security. Know this before you start.
3 min readRead tutorial →AI-Made Phishing and Deepfakes: Warning Signs and How to Stay Protected
Flawless fake emails, voice messages in the CEO's voice, staged video calls: learn the signs of AI-made scams and how your company can protect itself.
3 min readRead tutorial →AI in Cybersecurity: A Tool for Defense and for Attack
AI helps security teams spot threats faster, but the same technology has made attackers' work easier too. See what each side does and what your company should do.
3 min readRead tutorial →What Is AI Hallucination and How Do You Keep Its Errors in Check?
Language models sometimes give wrong answers with full confidence, from made-up sources to incorrect commands. Learn why hallucination happens and how to contain it at work.
3 min readRead tutorial →AI and Company Confidentiality: What Not to Give a Chatbot
Any text you enter into a chatbot leaves your company network. See which data must stay out, what services do with your data, and how to reduce the risk.
3 min readRead tutorial →AI Chatbots in Everyday Company Work: Where They Help and Where They Don't
AI chatbots can speed up writing, summarizing and research, but they don't fit every job. Learn where they are useful and where you need to be careful.
3 min readRead tutorial →The Pros and Cons of AI for Businesses: A Realistic Look
AI is neither a miracle nor a threat to run from. Weigh its benefits, drawbacks and hidden costs realistically for a small or mid-sized business, and start with a small project.
3 min readRead tutorial →How Large Language Models (LLMs) Work and What Their Limits Are
From tokens and next-word prediction to context windows and hallucinations: learn how large language models work so you know when to trust their output and when to be careful.
3 min readRead tutorial →What Is Generative AI and What Can It Do?
Generative AI creates new text, images, audio and code. See what it can do in a company, where you should not rely on it, and which risks need to be managed.
3 min readRead tutorial →Machine Learning, Deep Learning and Neural Networks: What's the Difference?
Machine learning, deep learning and neural networks are often used interchangeably. Learn how the three relate, what each is good for, and what data and hardware each one needs.
3 min readRead tutorial →Types of AI: Narrow, General and Superintelligent AI in Plain Language
When we talk about AI, which kind do we actually mean? Learn the difference between narrow, general and superhuman AI, without the hype, so you can set realistic expectations.
3 min readRead tutorial →Your Mail Server IP Is on a Blacklist: What Now?
Are company emails suddenly bouncing with "blocked" or "listed" messages? Your server's IP has probably landed on a blacklist. Find the cause, fix it and request removal.
3 min readRead tutorial →Shared Addresses and Aliases: info, sales and Other Department Addresses
Whose mailbox does info or sales go to, and what happens when that employee leaves? Learn how aliases, forwarders, groups and shared mailboxes differ and design department addresses properly.
3 min readRead tutorial →CEO Email Spoofing and Payment Fraud (BEC): How to Prevent It
An urgent email from the "CEO" or news that a supplier's bank account has changed: BEC fraud takes company money with no malware at all. Learn the warning signs and secure your payment process.
3 min readRead tutorial →Managing Mailbox Size and Archiving Before the Mailbox Fills Up
A full mailbox means customer emails never reach you and senders get an error. Keep company mailboxes in order with smart cleanup, an archiving policy and appropriate quotas.
3 min readRead tutorial →Migrating Business Email to a New Server Without Losing Messages
An unplanned mail server switch means lost messages, empty folders and staff unable to send email for hours. Use this phased approach to make the migration safe and trouble-free.
3 min readRead tutorial →IMAP or POP3? Setting Up Email Correctly in Outlook and on Mobile
Email that shows on a laptop but not on a phone, or vanishes forever when a PC fails, is often the result of picking the wrong protocol. Learn IMAP vs. POP3 and set them up correctly.
3 min readRead tutorial →Getting to Know cPanel: The Most-Used Sections for Site Managers
cPanel is the most common hosting control panel, but its dozens of icons can be confusing at first. Learn the most-used sections and handle everyday site tasks with confidence and safety.
3 min readRead tutorial →Hacked Website: Recovery Steps in the Right Order
Has your home page changed, are visitors being redirected elsewhere, or is Google showing a security warning? Use these steps to contain, clean and restore the site and close the entry point.
3 min readRead tutorial →Moving Your Website to a New Host Without Downtime
An unplanned move to a new host can mean hours of downtime, lost email and broken forms. Follow these steps to make the migration quiet, smooth and easy to roll back if needed.
3 min readRead tutorial →Speeding Up a WordPress Website: A Practical Guide
A slow site drives customers away and falls behind in Google results. Speed up your WordPress site with proper measurement, caching, image optimization and less unnecessary load.
3 min readRead tutorial →What Is an SSL Certificate and How Do You Keep It Always Valid?
One expired certificate is all it takes for browsers to scare visitors away with a "connection is not secure" warning. Learn how SSL works and make renewal automatic and monitored.
3 min readRead tutorial →Domain DNS Records Made Simple: A, CNAME, MX and TXT
Why won't the website load, or why isn't email arriving? The answer is often in a few DNS records. Learn the main domain records and how to change them without website or email downtime.
3 min readRead tutorial →Proxmox Backup Server: Overview, Setup and Key Tips
Proxmox Backup Server is an open-source backup tool fully integrated with Proxmox VE. Learn its architecture, features and key setup tips for fast, space-efficient VM backups.
3 min readRead tutorial →File Server Backup and Shadow Copy: Restoring Files Quickly and Easily
Most restore requests involve a single deleted file or folder. With Windows Shadow Copy plus a real backup alongside it, you get fast restores and protection against failures.
3 min readRead tutorial →A Disaster Recovery (DR) Plan for Small and Mid-Sized Businesses
Having backups is not the same as being able to get back to work. With a simple, written disaster recovery plan, you know who does what, and in what order, on the day of a crisis.
3 min readRead tutorial →Backup Retention Policy: How Many Copies and for How Long?
Keeping only the last few backups leaves you exposed to late-discovered errors and ransomware. Use the GFS method to build a sensible, written and workable retention policy.
3 min readRead tutorial →Offsite Backup: Options and How They Compare
A fire, theft or ransomware attack can wipe out every backup inside your office at once. Get to know your offsite backup options and choose the one that fits your business best.
3 min readRead tutorial →SQL Server Backup: Full vs. Differential vs. Log and a Practical Plan
Finance and business apps often run on SQL Server. Learn the three backup types, recovery models and a practical schedule to restore databases with minimal data loss.
3 min readRead tutorial →What Is an Immutable Backup and Why Is It Critical Against Ransomware?
A backup that even the system administrator cannot delete before a set date is your last line of defense against ransomware. Learn how immutable backups work and what matters most.
3 min readRead tutorial →RPO and RTO Explained: The Two Numbers That Shape Your Backup Plan
How much data can you afford to lose, and how long can you work without your systems? RPO and RTO turn these two questions into numbers that shape your backup plan.
3 min readRead tutorial →Call Recording: Uses, Retention and Key Considerations
Call recording is a valuable tool for training, quality control and resolving disputes, provided all parties are informed, access is controlled and there is a clear retention and deletion plan.
3 min readRead tutorial →Softphones for Remote Workers: Your Company Extension on Laptop and Mobile
With a simple app, remote employees can have their company extension on a laptop or mobile and call using the company number. Learn how to set it up securely and reliably.
3 min readRead tutorial →Phone System Security and Preventing Toll Fraud
A phone system that falls into an attacker's hands can run up a huge bill of international calls in a single night. Learn the common attack paths and the practical steps to close them.
3 min readRead tutorial →Fixing VoIP Call Quality Problems, from One-Way Audio to Choppy Calls
One-way audio, robotic voice, echo and calls that drop after a few seconds each have a specific cause. Use a step-by-step method to find and fix call quality problems on your network.
3 min readRead tutorial →Call Queues and Small Contact Centers: Key Settings and Reports
With a call queue, customers never hear a busy signal and calls are shared fairly among agents. Learn the key queue settings and the metrics that show how your contact center is performing.
3 min readRead tutorial →Designing an Auto Attendant (IVR) That Doesn't Frustrate Callers
An auto attendant can route a call to the right person in seconds or leave customers lost in nested menus. Learn the principles of designing a short, clear and caller-friendly IVR.
3 min readRead tutorial →What Is a SIP Trunk and How Does It Benefit Your Business?
A SIP trunk delivers your company's phone lines to the phone system over the internet or a dedicated link instead of copper wire. Learn the concept, benefits, prerequisites and how to choose one.
3 min readRead tutorial →A Server Disk Has Failed: What to Do and What Not to Do
An amber light on a server disk or a Degraded array alert is no time for rushed decisions. This guide covers diagnosing, replacing the disk and rebuilding the array without putting data at risk.
3 min readRead tutorial →NAS or SAN? Choosing the Right Storage for Your Business
A NAS shares files over the network, while a SAN presents disk space to servers like a local disk. Learn how they differ, what each is for, and what to check before buying storage.
3 min readRead tutorial →Server Hardware Lifecycle: When Should You Replace a Server?
An old server rarely fails overnight, but it gets riskier and costlier every year. Learn the end-of-life warning signs, the role of vendor warranty and support, and how to plan a replacement.
3 min readRead tutorial →Rack Organization and Cable Management, from Equipment Layout to Labels
A crowded rack and tangled cables mean human error, more heat and slow troubleshooting. This guide covers proper rack layout, power and network cable management, and a simple checklist.
3 min readRead tutorial →RAID Levels Made Simple: RAID 1, 5, 6 and 10
RAID combines several disks so that one failed disk does not stop your work or lose your data. Compare RAID 1, 5, 6 and 10 in plain terms and see which level fits which server.
3 min readRead tutorial →Server Room Cooling: Temperature, Humidity and Airflow
Excess heat is a common cause of server and disk failures. Control equipment inlet temperature, manage airflow and plan for AC failure to keep your server room cool and stable.
3 min readRead tutorial →Choosing the Right UPS for Your Server Room
A power outage or voltage spike can shut down servers and corrupt data in an instant. Size the load correctly, pick the right UPS type and set up automatic shutdown to protect your server room.
3 min readRead tutorial →Sharing Printers on the Network with Print Server and Group Policy
Instead of installing printers by hand on every computer, use a central Print Server and Group Policy to deliver printers automatically to each user based on their department.
3 min readRead tutorial →What Are FSMO Roles and Why Do They Matter for Active Directory?
The five FSMO roles handle tasks in Active Directory that only one domain controller can perform. Learn what each role does, where it lives, and how to transfer or seize it in an emergency.
3 min readRead tutorial →Deploying Windows LAPS: Unique, Automatic Local Admin Passwords
When the local Administrator password is the same on every PC, breaching one system means access to all. Windows LAPS gives each computer a unique, rotating password stored securely in the domain.
3 min readRead tutorial →DNS in Active Directory: Correct Setup and Troubleshooting
Slow logons, Group Policy not applying and errors joining the domain usually trace back to DNS. With the right settings and a few troubleshooting commands, keep your domain DNS healthy.
3 min readRead tutorial →Managing User Accounts in Active Directory, from Onboarding to Offboarding
Every employee account needs a clear process from day one to the last day. This guide shows how to create, change and disable Active Directory accounts in an orderly, secure way.
3 min readRead tutorial →Managing Windows Updates Across Your Network with WSUS
Instead of every PC pulling updates from the internet on its own, use WSUS to download them once, test them on a pilot group, and roll them out to all systems in a controlled way.
3 min readRead tutorial →Upgrading Legacy Windows Servers: A Step-by-Step Migration Plan
A Windows Server that is out of support no longer receives security patches. With a phased migration plan, move roles and services to a new version without lengthy downtime.
3 min readRead tutorial →Designing Shared Folder Permissions on a File Server: Share and NTFS
Why does someone in sales have access to the finance folder? Combine Share and NTFS permissions correctly and grant access by group to keep your file server organized, secure and manageable.
3 min readRead tutorial →Group Policy: The Practical Policies Every Company Needs
With Group Policy, you can apply security and work settings to every company computer from one place. This guide covers proper GPO structure, practical policies and troubleshooting.
3 min readRead tutorial →Moving Your Finance Software to a Cloud Server: Steps and Key Points
Finance software on a cloud server means reliable access for every branch and employee. This guide covers the move, from coordinating with the software vendor to cutover day and backups.
3 min readRead tutorial →Monitoring Cloud Server Resources: CPU, RAM, Disk and Timely Alerts
Most cloud server slowdowns and outages show warning signs in advance: a disk slowly filling up or RAM running short. With simple monitoring and the right alerts, spot problems before users do.
3 min readRead tutorial →Connecting a Cloud Server to Your Office with VPN: A Hybrid Model Guide
In a hybrid model, some services stay in the office and some move to a cloud server. With a well-designed VPN, the two work together as a single, secure and reliable network.
3 min readRead tutorial →First Steps on a New Linux Server: From Updates to Secure SSH
Just received a new Linux server? Before installing your main service, use these practical steps to update the system, secure SSH, enable the firewall and prepare the server for long-term use.
3 min readRead tutorial →Secure, Reliable Access to a Cloud Windows Server with Remote Desktop
Remote Desktop is the easiest way to work with a cloud Windows Server, and one of the most attacked services online. With these settings, keep staff connections both secure and smooth.
3 min readRead tutorial →Securing a Newly Delivered Cloud Server: The First Steps
A cloud server is on the internet from minute one, and bots start trying passwords right away. Before installing software or moving data, complete these security steps in order.
3 min readRead tutorial →Securing Your Virtualization Hosts: Essentials for Protecting Every Server
Breaching a virtualization host means access to every server at once. Use these essentials to secure the management console, accounts and network of your VMware, Hyper-V and Proxmox hosts.
3 min readRead tutorial →Converting Physical Servers to Virtual (P2V) Without the Headaches
An old physical server can be turned into a VM without reinstalling its software. Learn the P2V steps, common tools and tips that prevent database corruption and network conflicts.
3 min readRead tutorial →Storage for Virtualization: Local Disk, NAS, SAN or Ceph?
Where your VM disks live determines the speed, availability and total cost of your infrastructure. A practical comparison of local disk, NAS, SAN and Ceph distributed storage for businesses.
3 min readRead tutorial →Sizing Virtual Machines: Getting CPU, RAM and Disk Right
More CPU and RAM don't always make a VM faster. With a few simple sizing principles, you can improve server performance and make better use of host capacity and hardware spend.
3 min readRead tutorial →Migrating from VMware to Proxmox: Steps, Methods and Tips
VMware's licensing changes have many companies considering Proxmox. This guide walks through the migration, from inventory and VM preparation to cutover day and the first boot.
3 min readRead tutorial →Hyper-V Replica: Replicating Virtual Machines for Fast Recovery
With Hyper-V Replica, an up-to-date copy of your VMs waits on another server, so if the main host fails you can restore service in minutes, with no shared storage required.
3 min readRead tutorial →Proxmox Clustering and High Availability (HA): Concepts and Design Tips
With a Proxmox cluster, if one server fails, its VMs restart on another server, provided that quorum, networking and storage were designed correctly from the start.
3 min readRead tutorial →A Snapshot Is Not a Backup: The Difference and the Right Use of Each
A VM snapshot takes seconds, which makes it tempting to use instead of a backup, but it is lost with the VM if storage fails or ransomware hits. Learn the difference and when to use each.
4 min readRead tutorial →QoS on Branch Links: Business Traffic First, Downloads Later
When a backup or a large download saturates the branch link, phone calls and finance software suffer first. With proper QoS, critical traffic always gets its share of the branch link.
3 min readRead tutorial →Troubleshooting Branch VPN Tunnels: MTU, DNS and Recurring Drops
The tunnel is up, yet some pages won't load, file copies stall or the connection drops every few hours? Troubleshoot the three common branch VPN problems with a precise, step-by-step method.
4 min readRead tutorial →File Sharing Between Branches: Methods, Limits and Security Tips
Opening a file from the central server can take minutes at a branch, and replicating files can create conflicting versions. Learn the options and choose the right one.
3 min readRead tutorial →Running Accounting Software in Branches: Direct Connection, Remote Desktop or Web?
When branches share one accounting system, the connection method decides whether work runs smoothly or is slow and error-prone. Compare the three common methods, their pros, cons and requirements.
3 min readRead tutorial →New Branch Network Setup Checklist: From Site Survey to Opening Day
New branches are usually opened in a hurry, and the network is the last thing anyone thinks about. This checklist helps make sure nothing is missed, from the site survey all the way to opening day.
3 min readRead tutorial →What Is SD-WAN and How Does It Benefit Your Branch Offices?
SD-WAN uses each branch's internet links together intelligently and lets you manage every branch from one place. See how it works and when you really need it for your company.
3 min readRead tutorial →IT Onboarding and Offboarding Checklist: From Day One to the Last Day
An employee who has left but still has company email, VPN access or the Wi-Fi password is a real risk. A simple checklist makes onboarding and offboarding organized and secure for the IT department.
3 min readRead tutorial →Controlling USB Storage in Your Company: Preventing Data Leaks and Malware
A small flash drive can carry your customer list out of the company or bring malware into the network. With a few simple Windows policies, make the use of USB storage controlled and secure.
3 min readRead tutorial →Collecting and Reviewing Security Logs: Where to Start
Without logs you can neither spot an attack early nor work out what happened afterward. This guide shows which logs to collect, where to keep them and how to review them on a regular schedule.
3 min readRead tutorial →Antivirus or EDR? Protecting Computers and Servers
Traditional antivirus catches known malware, but today's attackers often work with Windows' own legitimate tools. See how EDR is different and how to choose and deploy it for your business.
3 min readRead tutorial →Secure Remote Access: Why You Should Never Expose RDP Directly
A Remote Desktop port exposed directly to the internet is found fast and hit by password-guessing attacks. Use these methods to secure remote access for staff, admins and contractors.
3 min readRead tutorial →The Principle of Least Privilege: Who Should Have Access to What?
When everyone has access to everything, one simple mistake or one hacked account can affect the whole company. With least privilege, make access organized, transparent and easy to control.
3 min readRead tutorial →Patch Management in Your Company: A Regular, Safe Routine
Unpatched systems are one of the most common causes of breaches, and unplanned updates can take services down. A regular routine, from asset inventory to monthly reporting, reduces both risks.
3 min readRead tutorial →Recognizing Phishing Emails: A Simple Guide for Employees
One click on a fake email can hand an attacker your password or the entire company network. Use these simple signs to spot phishing emails before any harm is done, and know what to do if you clicked.
3 min readRead tutorial →What to Do If Ransomware Hits: A Step-by-Step Response Plan
The first hours of a ransomware attack decide how large the damage becomes. This step-by-step plan, from isolating devices to safe recovery, helps you act calmly, quickly and correctly in a crisis.
3 min readRead tutorial →Preventing Ransomware in Your Company: Practical Measures That Actually Work
Ransomware usually gets in through an open door: a leaked password, exposed Remote Desktop or an unpatched system. These steps close the way in, stop it spreading and keep backups safe.
3 min readRead tutorial →Business Continuity: The Role of IT When Crisis Strikes
Fire, ransomware or a long power outage: what matters is how fast the company gets back to work. See how IT turns a business continuity plan from a document on paper into real readiness.
3 min readRead tutorial →Planning an Annual IT Budget for Your Company
When IT money is only spent after things break, costs rise and surprises keep coming. Use this approach to build an annual IT budget that is predictable, defensible and aligned with the business.
3 min readRead tutorial →IT Support Contracts: What Should They Clearly Define?
Most disputes with an IT support provider start with a vague contract. See what a support contract should spell out, from scope and response times to password ownership and ending the contract.
3 min readRead tutorial →IT Asset Inventory: Tracking Equipment, Licenses and Contracts
A domain that was not renewed, a license that expired without warning, a laptop nobody can locate: all come from having no IT asset list. See what to record and how to keep track of it.
3 min readRead tutorial →Two Internet Links in the Office: Failover and Load Balancing
An internet outage stops email, cloud apps, phones and branch connectivity. With a second link and properly configured failover and load balancing, your business no longer depends on one ISP.
3 min readRead tutorial →Network Loops and STP: Why One Wrong Cable Can Take Down Your Whole Network
A single cable with both ends plugged into the same switch can bring down an entire office network in seconds. See how network loops happen and how STP and the right settings prevent them.
3 min readRead tutorial →What Is PoE and How Do You Use It for Cameras, Phones and Access Points?
PoE delivers power and data over one network cable, so cameras and access points need no adapter or outlet. Learn the PoE standards, how to calculate power, and practical tips.
3 min readRead tutorial →Designing an IP Addressing Plan for Your Company
Unplanned addressing causes no trouble today, but becomes a major headache when you connect a new branch, set up VPN or segment the network. Build a readable, scalable addressing plan.
3 min readRead tutorial →DHCP and DNS on a Company Network: Concepts and Common Mistakes
When a computer is "connected to the network but nothing opens," DHCP or DNS is often to blame. Understand these hidden but vital services and fix their most common problems.
3 min readRead tutorial →Managed or Unmanaged Switch? A Guide to Choosing Switches for Your Company
Unmanaged switches are cheap and simple, but their limits show up quickly on a company network. Learn the differences between unmanaged, smart and managed switches and choose well.
3 min readRead tutorial →Structured Cabling: Cat6, Patch Panels and Labeling
Cabling is the foundation of every network service, and fixing it after installation is difficult and costly. Learn structured cabling basics, how to choose cable and how to label it.
3 min readRead tutorial →Troubleshooting a Slow Company Network Step by Step
"The network is slow" may be the most common user complaint. Use this step-by-step method to find the real cause instead of guessing, from cables and switches to the internet and servers.
3 min readRead tutorial →Network Documentation: What to Record and How
When the only person who knows the network is unavailable, every outage takes several times longer. Learn what to record about your company network and how to keep it up to date.
3 min readRead tutorial →Cloud Server or Physical Server? A Decision Guide for Businesses
For financial software, a file server or the company website, should you buy a physical server or rent a VM in a data center? A practical comparison of cost, security, speed and risk.
3 min readRead tutorial →Maintenance and Security Checklist for a WordPress Site on cPanel Hosting
Most hacked websites fall victim to an outdated plugin or a weak password. Use this monthly checklist to keep your company's WordPress site secure, fast and recoverable.
2 min readRead tutorial →Monitoring HP Server Health with iLO: From Email Alerts to Preventing Failures
HP servers warn you before they fail, as long as someone is listening. Use iLO to monitor the health of disks, memory, fans, temperature and power supplies.
3 min readRead tutorial →A Guide to Setting Up VoIP Phones in Your Company: From the Phone System to Call Quality
What are the benefits of IP telephony, what components do you need, and how do you keep call quality stable? A guide for managers ready to retire their old phone system.
3 min readRead tutorial →Why Do Company Emails Land in Spam? A Guide to SPF, DKIM and DMARC
Three DNS records decide whether your company's email reaches the inbox or the spam folder. Learn what SPF, DKIM and DMARC do and how to configure them correctly.
3 min readRead tutorial →10 Essential Tasks for a Healthy and Secure Active Directory
Active Directory is the key to every system in your company. Use these ten tasks to keep your domain organized, secure and recoverable when something goes wrong.
3 min readRead tutorial →Comparing Proxmox, Hyper-V and VMware for Businesses
Which virtualization platform is right for your company? A practical comparison of Proxmox, Hyper-V and VMware in terms of cost, features, backup and required skills.
2 min readRead tutorial →Connecting Branches with Site-to-Site VPN: Concepts, Design and Common Mistakes
How to connect branches to headquarters securely and reliably so everyone works as one network, from address planning to backup links, failover and monitoring.
3 min readRead tutorial →Multi-Factor Authentication and Password Policy: The Simplest Barrier Against Breaches
A large share of breaches start with a single leaked password. Close that door with the right password policy and multi-factor authentication for every user and system.
3 min readRead tutorial →10 Basic Firewall Rules for Small and Midsize Businesses
A firewall is only as secure as its rules. These ten basic rules close off most of the common paths attackers use to break into a company network and reach its systems.
3 min readRead tutorial →A Guide to Business Wi-Fi and a Secure Guest Network
Weak coverage, dropped connections and guests with access to the internal network are the three most common Wi-Fi problems in companies. Here is how to build business Wi-Fi properly.
3 min readRead tutorial →What Is a VLAN and Why Should You Segment Your Company Network?
A flat network puts every device in one big room, from cameras and printers to the finance server. Segment your network with VLANs to make it more secure, faster and easier to manage.
3 min readRead tutorial →How Can You Be Sure Your Veeam Backups Can Actually Be Restored?
A green job status does not mean a healthy backup. Use these methods to make sure your Veeam backups are intact and can actually be restored when you need them.
3 min readRead tutorial →What Is the 3-2-1 Backup Rule and How Do You Implement It in Your Company?
Three copies, two types of media, one copy off-site: the simplest rule for protecting company data from hardware failure, human error and ransomware.
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