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Browse the latest tutorials, guides, and practical examples across Linux, DevOps, security, databases, and programming on GoLinuxCloud.

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3098 articles

Blog illustration with latest articles, tutorials, guides, and how-to content across Linux and DevOps topics
security

Subdomain Enumeration Tools and Examples on Kali Linux

Get subdomains on Kali with Subfinder, Assetfinder, Amass, and massdns — passive enumeration, JSON source attribution, merge and resolve pipelines, and DNS validation on the authorized zonetransfer.me training zone.

Deepak Prasad13 min read
security

WPScan Tutorial: Scan WordPress Plugins, Themes, Users, and Vulnerabilities

Use WPScan 4 on Kali to fingerprint WordPress, get an API token for CVE data, enumerate plugins themes and users, read vulnerability results, and validate findings in an authorized Docker lab.

Kennedy Muthii22 min read
security

Proxmox Pentest Lab Setup: Isolated Bridge and Storage

Build the Proxmox VE foundation for a penetration testing lab: an internal bridge with no physical port for attack traffic, LVM-thin and ISO storage pools, static addressing for Kali and Windows targets, and direct Web …

Deepak Prasad11 min read
security

How to Create a Windows RAT with msfvenom and Meterpreter

Learn how to create a Windows RAT in an authorized lab with msfvenom and Meterpreter on Kali. Generate the payload, configure multi/handler, receive the callback, and verify the session.

Deepak Prasad11 min read
security

Linux Privilege Escalation: How to Escalate to Root

Escalate from a low-privilege Linux shell to root with an ordered guide: enumeration, sudo, SUID, capabilities, cron, PATH hijacking, passwd permissions, LinPEAS, and lab proofs.

Deepak Prasad17 min read
security

Windows Privilege Escalation with winPEAS and SeImpersonate

Learn Windows privilege escalation with winPEAS, whoami /priv, unquoted service paths, and SeImpersonate token abuse with SweetPotato or PrintSpoofer to reach SYSTEM.

Deepak Prasad13 min read
security

Password Spraying and Credential Stuffing on Active Directory

Password spray Active Directory with Kerbrute and NetExec on Kali. Check lockout policy and FGPP, validate users, spray Kerberos/SMB/LDAP, and test credential stuffing safely in GOAD-Light.

Deepak Prasad18 min read
security

Nmap Scripting Engine (NSE) for Enumeration on Kali Linux

Use Nmap NSE scripts on Kali to enumerate SSH, HTTP, FTP, SMB, and TLS certificates with safe and discovery categories, script-args, and saved output against Metasploitable 2, scanme.nmap.org, and nmap.org in an …

Deepak Prasad18 min read
security

SMTP and SMB Enumeration on Kali Linux

Enumerate SMTP users and SMB shares on Metasploitable 2 with smtp-user-enum, NetExec, enum4linux, and smbclient on Kali Linux in an authorized pentest lab.

Deepak Prasad14 min read
security

Network Sniffing with Wireshark and tcpdump on Kali Linux

Capture and analyze Metasploitable 2 HTTP traffic with tcpdump and tshark on Kali Linux, then open the pcap in Wireshark for passive recon in an authorized pentest lab.

Deepak Prasad14 min read
security

ffuf Web Fuzzing Tutorial: Directories, Parameters, and Virtual Hosts

Learn web fuzzing with ffuf on Kali: directory discovery, filters, auto calibration, parameter and POST JSON fuzzing, virtual hosts, recursion, Burp replay, plus a Wfuzz comparison for authorized labs.

Deepak Prasad14 min read
security

How to Find Hidden Web and API Endpoints on Kali Linux

Find hidden web and API endpoints on Metasploitable 2 with API spec probes, browser traffic, Katana JS crawling, Gobuster, ffuf, dirb, and Nikto in an authorized Kali lab.

Deepak Prasad15 min read
linux

Metasploit Tutorial: From Vulnerability to Meterpreter Session

Walk from an Nmap finding to a Metasploit module, payload, handler, and Meterpreter session on Kali Linux with msfconsole, msfvenom, and exploit/multi/handler against Metasploitable 2.

Deepak Prasad18 min read
security

Network Reconnaissance with Nmap on Kali Linux

Use Nmap on Kali Linux to find live hosts, open TCP/UDP ports, service versions, and OS details with tested Metasploitable and scanme.nmap.org examples.

Deepak Prasad16 min read
security

DNS Enumeration and Subdomain Discovery on Kali Linux

Learn DNS enumeration on Kali Linux with tested dig, dnsenum, DNSRecon and Nmap examples. Find DNS records, subdomains, reverse names and misconfigured AXFR zone transfers.

Deepak Prasad17 min read
security

ARP Spoofing MITM Attack with Bettercap and Ettercap

Learn how ARP spoofing creates an on-path MITM position on Kali Linux with Bettercap and Ettercap, verify poisoning with victim ARP tables and Wireshark, and see why HTTPS stays encrypted.

Deepak Prasad16 min read
security

Kali Linux Vulnerability Scanner Tools: Which Scanner Should You Use?

Choose a Kali Linux vulnerability scanner by use case—Nmap, Nikto, Nuclei, Greenbone/GVM, Nessus, Burp, ZAP, and specialized tools—with a practical workflow for authorized pentests.

Deepak Prasad12 min read
security

BloodHound Active Directory Attack Path Mapping on GOAD-Light

Collect GOAD-Light Active Directory data with bloodhound-ce-python on Kali, ingest into BloodHound CE on the same attacker VM, and map shortest attack paths to Domain Admins in an authorized Proxmox lab.

Deepak Prasad18 min read
security

OpenVAS / Greenbone Tutorial: Install, Scan, and Read Results

Install Greenbone Vulnerability Manager on Kali Linux, wait for feed sync, create a scan target and task, read severity and QoD in reports, and fix common no-scan-config errors.

Deepak Prasad21 min read
security

Modify Bash and Python Scripts for Recon and Enumeration

Modify Bash and Python recon scripts on Kali Linux—loops, functions, arithmetic, and Nmap wrappers—to port-scan, HTTP-probe, and ping-sweep Metasploitable 2 in an authorized lab.

Deepak Prasad15 min read
security

Banner Grabbing and Service Enumeration on Kali Linux

Learn banner grabbing on Kali Linux with Nmap, Netcat, curl, and HTTP examples. Identify SSH, FTP, SMTP, and web service banners, then verify versions before CVE research.

Deepak Prasad16 min read
security

Shodan Tutorial: How to Use Shodan on Kali Linux

Shodan tutorial for Kali Linux — install the CLI, initialize your API key, run shodan host and count, learn filter syntax, and see what the tested account unlocked. Optional Censys corroboration for authorized pentests.

Deepak Prasad15 min read
security

Penetration Testing Pre-Engagement: Scoping and Agreements

Learn how to scope a penetration test before testing begins: define objectives, create target and exclusion lists, choose black, gray, or white-box testing, and document NDA, SoW, authorization, and cloud boundaries.

Deepak Prasad14 min read
security

How to Set Up ProxyChains on Kali Linux with Tor

Set up ProxyChains on Kali Linux with proxychains4 and the tor daemon, edit proxychains4.conf for Tor SOCKS, verify with check.torproject.org, and run authorized tools through a proxy chain.

Kennedy Muthii10 min read
security

CompTIA PenTest+ (PT0-003) Cheat Sheet: Domains, Tools & Commands

CompTIA PenTest+ PT0-003 cheat sheet: domain weights, essential command matrix, and per-domain tool recall for engagement, recon, vulnerability analysis, attacks, and post-exploitation, with three lab-tested Nmap and DNS …

Deepak Prasad7 min read
security

Data Exfiltration Techniques: Staging, HTTPS, DNS, ICMP & Covert Channels

Learn collection vs staging vs exfiltration with ATT&CK IDs, compare HTTPS DNS cloud FTP SFTP email ICMP and physical channels, run a localhost dummy transfer lab, and map detection and reporting for PenTest+.

Deepak Prasad12 min read
security

C2 Frameworks: Sliver, Mythic, Metasploit and How CALDERA Fits

Compare Sliver, Mythic, Metasploit, and CALDERA for PenTest+ labs: what C2 is, sessions vs beacons, which tool to learn first, and a short localhost hostname check-in demo.

Deepak Prasad13 min read
security

Reverse Shell Cheat Sheet: Netcat, Bash, Python & TTY Upgrade

Linux reverse shell cheat sheet for authorized labs: Netcat variants, bash and Python callbacks, socat, bind shells, TTY upgrade, and listener troubleshooting on Kali.

Kennedy Muthii10 min read
security

Penetration Test Cleanup and Restoration Checklist

Penetration test cleanup checklist for authorized engagements: artifact logging, stop listeners, remove persistence and tools, restore config, rotate credentials, preserve evidence, verify restoration, and client …

Deepak Prasad11 min read
security

SSH Pivoting and Tunneling: Port Forwarding, SOCKS & sshuttle

Reach an internal service through a dual-homed jump host using SSH local, remote, and dynamic SOCKS forwards, ProxyChains, sshuttle, and Metasploit route basics — with a namespace pivot practice lab you build on Kali …

Deepak Prasad20 min read