Certification prep

58 courses, 950 lessons. A real Kali Linux lab in the browser.

CompTIA A+ preparation (Level 101, 25 lessons): You learn computer hardware, operating systems, basic networking and security, and how to solve faults like a help desk technician.
A+ exam prep: performance-based labs (Level 101, 16 lessons): You solve questions like the A+ performance-based ones: choose parts, match cables, set up a network, prepare a disk and write a complete fault ticket.
A+ exam prep: practice exams (Level 101, 13 lessons): You prepare for the A+ exam with a practice set per topic and two full mocks, find the root cause of your mistakes and build your final revision list.
CompTIA Security+ prep (Level 201, 25 lessons): You meet the five Security+ exam domains in a real Kali lab and practise every topic yourself, from detection to hardening.
CompTIA Network+ prep (Level 201, 22 lessons): You study the Network+ exam topics hands-on with real Linux tools, from addressing and routing to services and monitoring.
CompTIA Linux+ prep (Level 201, 23 lessons): You work through the Linux+ exam domains on a real Linux server: hardware, storage, security, scripting and troubleshooting tasks.
RHCSA prep (Level 201, 25 lessons): You work through every RHCSA objective on a real Red Hat compatible server: storage, networking, SELinux and container tasks.
LFCS prep (Level 201, 23 lessons): You work through the LFCS objectives on a real Ubuntu server: commands, networking, services and storage tasks.
Security+ exam prep: threats, vulnerabilities and mitigations (Level 201, 16 lessons): You get to know attackers, attack vectors and vulnerability types, find weaknesses yourself on badly configured targets and see which mitigation works.
Security+ exam prep: security architecture (Level 201, 16 lessons): You design secure network zones, build firewall rules and encrypted tunnels, classify and protect data and test recovery from backup.
Security+ exam prep: security operations (Level 201, 17 lessons): You do a security team’s daily work: harden systems, scan and prioritise vulnerabilities, watch logs and handle an incident from detection to report.
Security+ exam prep: security program management (Level 201, 14 lessons): You learn to build a security programme and explain it to management, from policies and the risk register to supplier reviews and business continuity.
Security+ exam prep: performance-based labs (Level 201, 15 lessons): In questions like the Security+ performance-based ones you fill in rule tables, place devices and examine logs and packets, all against the clock.
Security+ exam prep: practice exams (Level 201, 13 lessons): With a practice set per exam domain and mixed mocks you measure your gaps and turn your mistakes into personal revision cards.
Network+ exam prep: network implementation (Level 201, 17 lessons): You set up static and dynamic routing, NAT, VLANs and DHCP on a real router and switch topology and plan wireless and physical installation.
Network+ exam prep: network operations (Level 201, 14 lessons): You learn the daily work of keeping a network up: documentation, configuration backups, SNMP and log collection, flow analysis, quality of service and high availability.
Network+ exam prep: network security (Level 201, 14 lessons): You learn network security in the lab by seeing attacks and stopping them, from central authentication and access lists to layer 2 attacks and device hardening.
Network+ exam prep: network troubleshooting (Level 201, 15 lessons): On a network with injected faults you methodically find problems at every layer from the cable to DNS, prove the root cause and fix it for good.
Network+ exam prep: performance-based labs (Level 201, 15 lessons): In questions like the Network+ performance-based ones you fill in subnet tables, build topologies, order rules and find faults from command output.
Network+ exam prep: practice exams (Level 201, 13 lessons): With practice sets per domain, subnetting speed drills and mixed mocks you measure whether you are ready for the Network+ exam.
Linux+ exam prep: system management (Level 201, 16 lessons): You manage a Linux server from top to bottom, from the boot process and kernel modules to LVM and RAID, building packages and network settings.
Linux+ exam prep: security (Level 201, 16 lessons): You bring a Linux server up to audit standard, from users and sudo rules to PAM, SSH, SELinux, AppArmor, the firewall, disk encryption and auditd.
Linux+ exam prep: automation and scripting (Level 201, 15 lessons): You write Bash and Python scripts, version them with Git, automate configuration with Ansible and build container images safely.
Linux+ exam prep: troubleshooting (Level 201, 16 lessons): On Linux servers with injected faults you find and fix, with evidence, the root cause of slowness, full disks, broken mounts, failing services and login problems.
Linux+ exam prep: performance-based labs (Level 201, 14 lessons): You solve questions like the Linux+ performance-based ones in a real terminal: permissions, storage, services, networking, firewall, script and container tasks.
Linux+ exam prep: practice exams (Level 201, 13 lessons): With practice sets per domain, command-output reading and file-path tests you measure whether you are ready for the Linux+ exam.
RHCSA exam prep: objective-by-objective labs (Level 201, 20 lessons): You practise each RHCSA objective in its own lab, unguided, and confirm that it survives a reboot.
LFCS exam prep: objective-by-objective labs (Level 201, 21 lessons): You practise each LFCS objective unguided in its own Ubuntu lab and verify the result with your own commands.
LPIC-1 exam prep: the first exam (Level 201, 21 lessons): You study the topics of the first LPIC-1 exam, system architecture, installation, package management, the command line and file systems, hands-on on two different distributions.
LPIC-1 exam prep: the second exam (Level 201, 22 lessons): You study the topics of the second LPIC-1 exam, the shell and scripts, admin tasks, essential services, networking and security, hands-on on real servers.
LPIC-1 exam prep: practice exams (Level 201, 12 lessons): With topic sets for both exams, fill-in-the-blank drills and configuration-file practice you measure whether you are ready for LPIC-1.
RHCSA practice exam 1 (Level 301, 20 lessons): A timed, hands-on practice exam.
RHCSA practice exam 2 (Level 301, 20 lessons): A timed, hands-on practice exam.
LFCS practice exam 1 (Level 301, 20 lessons): A timed, hands-on practice exam.
LFCS practice exam 2 (Level 301, 20 lessons): A timed, hands-on practice exam.
RHCE: automation with Ansible (Level 301, 25 lessons): You learn to configure many servers at once, repeatably, with Ansible, using roles and encrypted secrets.
Security+ exam prep: final mock exam (Level 301, 12 lessons): The last check before the Security+ exam: you measure your readiness, sit two full mocks, see the reasoning behind every wrong answer and take a final mock under real time conditions.
Network+ exam prep: final mock exam (Level 301, 12 lessons): The last check before the Network+ exam: you measure your readiness, sit two full mocks, see the reasoning behind every wrong answer and take a final mock under real time conditions.
Linux+ exam prep: final mock exam (Level 301, 12 lessons): The last check before the Linux+ exam: you measure your readiness, sit two full mocks, see the reasoning behind every wrong answer and take a final mock under real time conditions.
RHCSA exam prep: final mock exams (Level 301, 13 lessons): With two new two-server full mocks and a final you get used to RHCSA exam conditions and build the habit of persistence, reboots and verification.
LFCS exam prep: final mock exams (Level 301, 13 lessons): With two new full mocks and a final you get used to LFCS exam conditions and learn to finish tasks in the right order and persistently.
CySA+ exam prep: security operations (Level 301, 16 lessons): Like a SOC analyst you learn what normal looks like, find signs of malicious activity in network, endpoint, application, email and file data, and confirm them with SIEM queries and threat hunting.
CySA+ exam prep: vulnerability management (Level 301, 15 lessons): You set up a scanning programme, tune scans, validate findings, prioritise them in context and complete remediation through change management.
CySA+ exam prep: incident response (Level 301, 14 lessons): You read an incident through attack frameworks, build a timeline from memory and disk images, contain and eradicate, and report the root cause and lessons.
CySA+ exam prep: reporting and communication (Level 301, 12 lessons): You write vulnerability and incident reports for their readers, build a metrics dashboard and learn notification duties and crisis communication.
CySA+ exam prep: performance-based labs (Level 301, 14 lessons): In analyst simulations like the CySA+ ones you make decisions from logs, scan reports, emails, packet captures and process trees.
CySA+ exam prep: practice exams (Level 301, 12 lessons): With practice sets per domain, tool-output reading and linked scenario questions you measure whether you are ready for the CySA+ exam.
PenTest+ exam prep: engagement planning and scoping (Level 301, 13 lessons): You put a penetration test on solid ground before it starts with legal authorisation, scope, rules of engagement and contracts, and plan risk and communication.
PenTest+ exam prep: reconnaissance and enumeration (Level 301, 16 lessons): You get to know a fictional company first from open sources, then by active scanning and service enumeration, automate the recon with scripts and report it.
PenTest+ exam prep: vulnerability discovery and analysis (Level 301, 14 lessons): You tune vulnerability scans, validate findings by hand, find web, code, configuration and crypto weaknesses and turn them into a prioritised attack plan.
PenTest+ exam prep: attacks and exploits (Level 301, 18 lessons): You carry out network, web, password, social engineering and wireless attacks on your own lab targets and build the chain from first access to privilege escalation.
PenTest+ exam prep: performance-based labs (Level 301, 14 lessons): In questions like the PenTest+ performance-based ones you pick the next step from scan output, read scripts, recognise payloads and reach the flag on a real target.
PenTest+ exam prep: practice exams (Level 301, 12 lessons): With practice sets per domain and tool- and code-reading questions you measure whether you are ready for the PenTest+ exam.
LPIC-1 exam prep: final mock exam (Level 301, 12 lessons): The last check before the LPIC-1 exam: you measure your readiness, sit two full mocks, see the reasoning behind every wrong answer and take a final mock under real time conditions.
RHCE Enterprise Linux: troubleshooting and recovery (Level 401, 25 lessons): On a production Red Hat server you collect evidence first, find the root cause, and repair boot, storage, package, network and application faults.
CySA+ exam prep: final mock exam (Level 401, 12 lessons): The last check before the CySA+ exam: you measure your readiness, sit two full mocks, see the reasoning behind every wrong answer and take a final mock under real time conditions.
PenTest+ exam prep: post-exploitation and reporting (Level 401, 15 lessons): You practise persistence, lateral movement, pivoting and domain attacks in the lab, then clean up your traces and present the findings to the client in a clear report.
PenTest+ exam prep: final mock exam (Level 401, 12 lessons): The last check before the PenTest+ exam: you measure your readiness, sit two full mocks, see the reasoning behind every wrong answer and take a final mock under real time conditions.

Projects

A+ practical: set up a new showroom's computers and network: For Karaçam Mobilya's new showroom, you set up user accounts, folder permissions, a backup job and the small-office network's basic firewall, and write a handover document for the work.
A+ practical: clean a suspected infected PC and document it: At Sedirli Hukuk Bürosu, you examine a slow, oddly behaving computer with the six-step troubleshooting method, apply the malware removal steps in order, restore the data from backup and close the support ticket.
Security+ practical: build a three-zone gateway and VPN: You separate Turnalı Perakende's DMZ, internal and management networks with nftables rules, set up WireGuard access for administrators and hand in a rule table showing the permitted flows.
Security+ practical: triage the overnight logs and patch the server: You review one night of Mercanköşk Otelcilik's system logs and Suricata alerts, separate the real incident from the noise, patch the out-of-date server and write an incident note for shift handover.
Security+ practical: find and harden weak services: On Ilgıntepe Tekstil's lab server, you identify and close outdated SSH and FTP settings, open directory listing and an admin panel with a default password, and write a hardening report with before and after scans.
Network+ practical: take a branch network from plan to working: For Kuzeyyıldızı Kargo's new hub, you draw up the subnet plan, set up VLANs, DHCP, DNS and routing, and prepare a network document proving end-to-end connectivity.
Network+ practical: five network faults in one shift: In Yakamoz Telekom's network operations centre, you methodically find and fix a wrong VLAN, a bad gateway, an MTU mismatch, a duplicate IP and broken DNS, and write a fault ticket with the root cause for each.
Linux+ practical: build an application server and hand it over: For Göktaşı Yazılım, you set up LVM storage, service units, users and sudo rules and the firewall on a server, and write a handover record showing the hardening steps.
Linux+ practical: rollout with a script, Ansible and a container: For Saklıvadi Üniversitesi's two lab servers, you write an inventory collection script and an Ansible playbook, and bring up a small web service as a rootless podman container.
LPIC-1 practical: an administrator's day on two distributions: On Selvikent Belediyesi's two servers, one Debian-based and one RPM-based, you configure packages, file systems, the shell environment, scheduled jobs, time and locale settings from an exam-style task list.
RHCSA practical: recover a server that will not boot and reconfigure it: On Demirsu Enerji's server that will not boot, you reset the root password, repair a broken fstab, fix SELinux contexts, extend the LVM volume and make services persistent, then record what you did in a recovery note.
LFCS practical: rebuild storage and networking: On Lodoskaya Denizcilik's port server, you set up storage with RAID and LVM, a network bond over two interfaces, user quotas and a scheduled backup from an exam-style task list.
RHCE practical: baseline three servers with Ansible: For Ayçiçeği Gıda's three servers, you write a set of playbooks using roles, variables, templates and Ansible Vault that set up users, storage, the firewall and a web service.
CySA+ practical: from scan to remediation plan: You run credentialed and uncredentialed scans of Mavikaya Lojistik's lab network, weed out false positives, prioritise the findings by business impact and write a remediation plan for the system owners.
CySA+ practical: from alert to incident report: Starting from one alert at Lavinya Klinikleri, you examine the prepared logs, packet capture and memory image, build the incident timeline and write an incident report with containment and recovery recommendations.
PenTest+ practical: scoping document and vulnerability analysis: For Mercanköşk Otelcilik, you prepare the scope, rules of engagement and authorisation letter for a permitted lab assessment, then validate the scan results from your own lab network and produce a prioritised findings summary.
RHCE practical: diagnose the outage and recover the system: During an outage on Yelkovan Bankası's batch server, you diagnose and repair a boot problem, disconnected iSCSI storage and failed service dependencies, configure kdump and write an outage report with the root cause.
PenTest+ practical: assessment report and remediation retest: From the prepared evidence of a completed, permitted lab assessment at Turnalı Perakende, you write the report with an executive summary and technical findings, then retest the applied fixes in the lab and record the results in the report.