Network Security Channel

🛡 Wazuh Mastery Pack · 10 of 15 — Active Response Detection without response is just expensive logging. This cheat sheet is Wazuh's killer feature: built-in response scripts (firewall-drop, disable-account, host-deny), the <command> + <active-response> wiring in ossec.conf, and a Bash skeleton for writing your own AR script. What you can automate today: 🔹 Block an IP for 10 minutes after 5 failed SSH attempts 🔹 Disable a Windows account that fired a credential-dumping detection 🔹 Kill a malicious process the moment FIM sees it write to a sensitive path 🔹 Null-route an IP across every Wazuh agent simultaneously Two warnings I learned the hard way: ⚠️ Test ARs in lab. A misfire on rule 5715 (failed SSH from your own admin IP) can lock you out of your own server. ⚠️ Use timeouts. Permanent firewall rules age into accidental black holes within weeks. #Wazuh #ActiveResponse #SOAR #IncidentResponse #SOC #BlueTeam #InfoSec 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer

🛡 Wazuh Mastery Pack · 09 of 15 — VirusTotal & TI Integrations A Wazuh alert that says "new file in /var/www" is OK. A Wazuh alert that says "new file in /var/www, hash matched 47 VT vendors" is a different conversation. This cheat sheet is the <integration> block pattern — VirusTotal for hash lookups, Slack for alerting, PagerDuty for on-call wake-ups, Shuffle for SOAR playbooks, and custom webhook for the rest. Pro tip on VirusTotal: 👉 Free tier = 4 requests/min. Pair the integration with a tight rule_id (e.g. only FIM events under /var/www and /home), or you'll burn the quota in the first 10 minutes of any attack. The ROI: every analyst-hour spent on triage drops, because the enrichment is already in the alert. #Wazuh #ThreatIntel #VirusTotal #SOAR #SOC #BlueTeam #InfoSec

🛡 Wazuh Mastery Pack · 08 of 15 — File Integrity Monitoring FIM is the most underrated detection control in any SIEM. This cheat sheet is the working syscheck config — Linux paths, Windows registry Run keys, realtime vs whodata vs scheduled, report_changes for actual diffs, and the ignore patterns that keep alert volume sane. Where FIM earns its keep: ✓ /etc on every Linux server (configs, sudoers, cron) ✓ /var/www on web hosts (catches web shells the moment they land) ✓ HKLM\Software\Microsoft\Windows\CurrentVersion\Run on Windows (boot persistence) ✓ C:\Windows\System32\drivers\etc (hosts-file tampering) Real-time FIM on /etc and Windows registry Run keys = the highest-ROI detection you can deploy in under 10 minutes. #Wazuh #FIM #FileIntegrityMonitoring #SIEM #SOC #BlueTeam #InfoSec 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer

🛡 Wazuh Mastery Pack · 07 of 15 — MITRE ATT&CK Mapping Detections without ATT&CK tags are detections that nobody else can interpret. This cheat sheet shows how to add a single <mitre> block to your custom rules, the techniques you should cover first (T1110, T1078, T1059, T1486, T1003 — these alone catch a huge chunk of real-world attacks), and the queries to slice your alerts by technique. Why this matters: 👉 Threat reports speak ATT&CK. 👉 Tabletop exercises speak ATT&CK. 👉 Threat-intel feeds tag IOCs with ATT&CK. The moment your Wazuh rules speak it too, the whole stack — detection → triage → reporting → red team feedback — starts working as one system. Bonus tip: load your rule.mitre.id data into the MITRE ATT&CK Navigator to see your detection coverage as a heatmap. Find the gaps. Close them. #Wazuh #MITREATTACK #DetectionEngineering #ThreatIntel #SOC #BlueTeam #InfoSec

🛡 Wazuh Mastery Pack · 06 of 15 — Wazuh Query Language (WQL) Triage speed = how fast you can write the right query. This cheat sheet is the field-level reference for filtering alert data inside the Wazuh Dashboard — exact-match, ranges, boolean logic (AND / OR / NOT), wildcards, and the fields you'll reach for every shift. The three queries every SOC analyst should know by heart: 🔹 rule.level >= 12 → only critical alerts. Cuts the noise instantly during triage. 🔹 rule.groups: "authentication_failed" AND NOT data.srcuser: "backup" → real failed-auth events, minus your noisy service accounts. 🔹 rule.mitre.id: "T1110" → every brute-force alert across your fleet, in one click. Save these as Saved Searches in the Dashboard. Triage time drops by half. #Wazuh #SOC #ThreatHunting #SIEM #BlueTeam #SecurityAnalyst #InfoSec 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer

🛡 Wazuh Mastery Pack · 05 of 15 — Wazuh API Anything you can do in the Wazuh dashboard, you can automate via the REST API on port 55000. This cheat sheet is the muscle: token auth, the endpoints I hit weekly, filtering and pagination, and curl one-liners you can drop into a Bash script today. Three workflows the API unlocks: 🔹 Mass-restart agents after a rule change → PUT /agents/restart (no more clicking through 200 hosts) 🔹 Auto-decommission stale agents → GET /agents?lastKeepAlive&status=disconnected → DELETE the list 🔹 Pipe rule and SCA data into your own dashboards → no need to touch OpenSearch directly Tokens expire in 15 minutes by default. Re-auth in your script, don't hardcode them. #Wazuh #API #SIEM #Automation #SOC #DevSecOps #InfoSec 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer

🛡 Wazuh Mastery Pack · 04 of 15 — Rules & Decoders Detection engineering with Wazuh comes down to two artifacts: 📜 Decoders — pull structure out of unstructured logs 🚨 Rules — turn structured fields into alerts This cheat sheet is the anatomy of both: alert levels 0–16 and what they actually mean, the rule ID ranges that keep you from colliding with built-ins, the chained-rule pattern (if_matched_sid + frequency + timeframe) that detects brute-force behavior, and a working decoder for a custom application log. A practice that separates senior detection engineers from juniors: 👉 Every rule should map to a MITRE ATT&CK technique. <mitre><id>T1110</id></mitre> It costs nothing, takes seconds, and makes your alerts speak the same language as every threat report on the planet. #Wazuh #DetectionEngineering #SIEM #MITREATTACK #SOC #ThreatHunting #InfoSec

🛡 Wazuh Mastery Pack · 03 of 15 — Configuration Files Wazuh's power lives in three XML files: 🔹 /var/ossec/etc/ossec.conf — manager's brain 🔹 /var/ossec/etc/shared/default/agent.conf — central agent policy 🔹 /var/ossec/etc/rules/local_rules.xml — your custom detections This cheat sheet ships ready-to-paste blocks for all three — the global section, the <remote> block agents connect through, central agent policy that pushes to every endpoint, and a working custom rule template. The single biggest mistake I see in custom rules: 👉 Using rule IDs below 100000. The 1–9999 range is owned by Wazuh's built-in ruleset. Collide with it and your rule will silently lose to the built-in. Always use 100000 and above for your custom detections. If you're tuning Wazuh this week, save this one. #Wazuh #SIEM #SOC #DetectionEngineering #InfoSec #BlueTeam

🛡 Wazuh Mastery Pack · 02 of 15 — CLI Commands The Wazuh GUI is great. The CLI is where you actually solve problems at 2am. This cheat sheet is the muscle memory I wish I'd had on day one — service control, agent management, live log testing with wazuh-logtest, cluster operations, and the file paths you'll touch a thousand times. Three commands every Wazuh operator should burn into memory: 🔹 /var/ossec/bin/wazuh-control configtest → validates ossec.conf BEFORE you restart in production. Has saved me from at least three outages. 🔹 /var/ossec/bin/wazuh-logtest → paste a raw log line, see exactly which decoder and which rule fires (or doesn't). Single best tool for tuning custom rules. 🔹 /var/ossec/bin/agent_control -l → shows every agent and its connection status. Faster than the dashboard when you just need a quick health check. If you operate Wazuh and aren't using these, you're doing it the hard way. #Wazuh #SIEM #SOC #BlueTeam #DevSecOps #CLI #InfoSec 📱 Channel : @Engineer_Computer

🛡 Wazuh Mastery Pack · 01 of 15 — Installation & Setup The single most repeated question from juniors picking up Wazuh: "Where do I even start?" This first cheat sheet gets a Wazuh stack from zero to producing alerts in under 30 minutes — Manager, Indexer, Dashboard, Agents, all the ports you must open, and the verification one-liners I run before walking away from any new install. A few non-obvious things people miss on day one: - The all-in-one assistant script (wazuh-install.sh -a) is a lab/PoC tool — don't ship it to prod - /var/ossec/wazuh-install-files.tar contains your initial creds. Move it to a vault. Lose it = full reinstall. - Prefer TCP/1514 over UDP for event ingest — UDP silently drops events under load - Always run /var/ossec/bin/wazuh-control configtest before restarting the manager If you're starting your Wazuh journey this week, this one is for you. #Wazuh #SIEM #SOC #CyberSecurity #BlueTeam #InfoSec #OpenToWork

🔐 Fortinet Firewall Topology – Secure. Segment. Protect. A well-designed network is the backbone of strong cybersecurity. This topology using Fortinet demonstrates how to build a secure and scalable infrastructure with proper segmentation and control. ✅ Key Highlights: • Segmented zones: LAN (Trust), DMZ, and Management Network • Secure remote connectivity via IPsec VPN • Dual WAN setup for high availability and backup internet • Controlled access policies between network zones • Advanced security features like IPS, Web Filtering, SSL Inspection, and Application Control 🚀 Benefits: • Enhanced security through network segmentation • Reliable remote access for branch offices • Centralized management and monitoring • Improved resilience with failover internet Strong network architecture isn’t just about connectivity—it’s about protection, performance, and control. #CyberSecurity #Networking #Fortinet #Firewall #ITInfrastructure #NetworkSecurity #VPN #ITSupport

🔍 Active Directory Enumeration Walkthrough: Mapping a Domain with pywerview Just published a hands-on lab write-up demonstrating how an authenticated attacker with low-privileged credentials can enumerate a full Active Directory environment using pywerview — the Python port of the legendary PowerView module — and uncover real privilege escalation paths from a single foothold. 🔹 Lab Scenario: Starting credentials: raj / Password@1 against the ignite.local domain. From this minimal access, mapping out users, groups, computers, delegation settings, ACLs, GPOs, and trust relationships — entirely over LDAP. 🔹 Key Findings Uncovered Through Enumeration: ✅ Domain Admin discovery — identified the aaru account via --admin-count filter (adminCount=1, member of Domain Admins) ✅ Kerberoastable SPN — the kavish account exposed via --spn, configured with TRUSTED_TO_AUTH_FOR_DELEGATION against a SQL server (constrained delegation w/ protocol transition) ✅ Unconstrained Delegation hosts — flagged via --unconstrained (a classic path to DC compromise) ✅ Backup Operators abuse path — user shivam enumerated as a member, opening NTDS.dit dump potential ✅ Trust enumeration — bidirectional forest trust to pentest.local discovered via get-netdomaintrust ✅ Domain policy extraction — password length, complexity, lockout thresholds, and Kerberos ticket lifetimes all readable from SYSVOL 🔹 pywerview Modules Demonstrated: get-netdomain, get-netuser, get-netgroup, get-netgroupmember, get-netcomputer, get-netshare, get-netsession, get-netloggedon, get-netou, get-netsite, get-netsubnet, get-netgpo, get-domainpolicy, invoke-userhunter, invoke-processhunter, invoke-checklocaladminaccess, get-objectacl, get-netdomaintrust 🔹 Why This Matters for Defenders: Every red-team finding above is a blue-team checklist item. Misconfigured delegation, stale adminCount=1 flags, over-privileged Backup Operators, and SPN sprawl on user accounts are the silent killers of AD environments. You can't harden what you can't see. 🔹 Key Lesson From the Lab: A single low-privileged user is enough to map your entire domain, identify Tier 0 assets, and build a full attack graph — without ever touching a tool that triggers EDR. LDAP queries are noisy only if you're watching for them. 💼 Currently exploring new opportunities in Network & Cybersecurity Engineering — open to on-site, hybrid, or remote roles. I deliver hands-on services in network design, firewall deployment (Fortinet, Cisco), Active Directory hardening, ICS/OT security (IEC 62443, NIST), penetration testing, and infrastructure hardening. #CyberSecurity #ActiveDirectory #RedTeam #PenetrationTesting #pywerview #PowerView #ADSecurity #LDAP #Kerberoasting #PrivilegeEscalation #InfoSec #BlueTeam #OpenToWork #NetworkSecurity #OffensiveSecurity 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer

🎯 Built a Free CompTIA Security+ (SY0-701) Practice Exam Simulator — No Friction, No Sign-up As part of giving back to the cybersecurity community, I've put together a free, browser-based practice exam simulator for anyone preparing for the CompTIA Security+ SY0-701 certification. Whether you're starting your InfoSec journey or sharpening your fundamentals, this tool is built to mirror the real exam experience. 🔹 What's Inside: ✅ 300 original practice questions covering all 5 official SY0-701 domains ✅ Practice Mode — instant feedback and detailed explanations after every answer, so you learn as you go ✅ Exam Mode — fully timed simulation with no feedback until submission, matching real test conditions ✅ Flexible session sizing — choose 10, 20, 50, or 90 questions per run ✅ Domain targeting — practice all five domains or focus on weak areas ✅ Performance analytics — domain-by-domain score breakdown and incorrect-answer review ✅ Browser session persistence — refresh-safe progress, no account required 🔹 Domain Coverage (Weighted to Match the Real Exam): 📘 1.0 General Security Concepts — 12% 📘 2.0 Threats, Vulnerabilities, and Mitigations — 22% 📘 3.0 Security Architecture — 18% 📘 4.0 Security Operations — 28% 📘 5.0 Security Program Management and Oversight — 20% 🔹 Why This Matters: Most quality exam prep tools sit behind paywalls or require lengthy sign-ups. I wanted something that respects the learner's time — open the page, pick a domain, start practicing. That's it. 🔹 Key Lesson From Building It: The hardest part of certification prep isn't memorizing acronyms (SLA vs. ISA, TPM vs. HSM, CASB vs. SWG…) — it's training your reasoning under timed pressure. A timer + explanations + domain breakdown is what bridges that gap. 💼 Currently exploring new opportunities in Network & Cybersecurity Engineering — open to on-site, hybrid, or remote roles. I deliver hands-on services in network design, firewall deployment (Fortinet, Cisco), WAF implementation, ICS/OT security (IEC 62443, NIST), and infrastructure hardening. #CyberSecurity #SecurityPlus #CompTIA #SY0701 #InfoSec #CertificationPrep #NetworkSecurity #OpenToWork #NetworkEngineer #CyberCareer #ContinuousLearning 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer

🛡 End-to-End Web Security Architecture: FortiWeb WAF + FortiGate in Reverse Proxy Mode Recently completed a comprehensive lab implementation and full documentation of a production-grade web security architecture using FortiWeb as a Web Application Firewall behind FortiGate, deployed on PNETLAB with KVM-based VMs. 🔹 Traffic Flow Architecture: Client → FortiGate (WAN/VIP) → FortiWeb (WAF Inspection) → Apache2 Real Server → Response back to Client 🔹 Key Implementation Highlights: ✅ Linux Web Server hardening with Apache2 and static IP configuration via Netplan ✅ FortiWeb interface setup across three segments (Real Server / Client-LAN / Management) ✅ Complete WAF policy chain: Virtual IP → Server Pool → Virtual Server → Server Policy ✅ FortiGate perimeter configuration with DNAT Virtual IP (100.100.100.50 → 192.168.100.50) ✅ Firewall policy with full session logging for HTTP/HTTPS/PING traffic ✅ CLI-based traffic logging activation on FortiWeb (a step many engineers miss!) ✅ End-to-end verification through Forward Traffic logs on both devices 🔹 Why Reverse Proxy Mode? It provides deep HTTP/HTTPS inspection, granular WAF policy enforcement, and clean separation between perimeter firewalling (FortiGate) and application-layer protection (FortiWeb) — a layered defense approach aligned with Zero Trust principles. 🔹 Key Lesson Learned: The order of WAF policy configuration matters → Virtual IP must exist before the Server Pool, which must exist before the Virtual Server, which must exist before the Server Policy. Skipping the sequence breaks the binding chain. 💼 Currently exploring new opportunities in Network & Cybersecurity Engineering — open to on-site, hybrid, or remote roles. I deliver hands-on services in network design, firewall deployment (Fortinet, Cisco), WAF implementation, ICS/OT security (IEC 62443, NIST), and infrastructure hardening. #CyberSecurity #FortiWeb #FortiGate #WAF #NetworkSecurity #Fortinet #ReverseProxy #InfoSec #OpenToWork #NetworkEngineer #PenetrationTesting #ICS #OTSecurity 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer

Bug Bounty Training Program (Online) 🔗 Register here: https://lnkd.in/g--cfJ3k 💬 WhatsApp: https://lnkd.in/gkb4ttYV 📧 Email: info@ignitetechnologies.in Hurry up, get enrolled yourself with IGNITE TECHNOLOGIES’ fully exclusive Training Program “Bug Bounty.” ✔️ Table of Content 🚀 Introduction to WAPT & OWASP Top 10 🛠 Pentest Lab Setup 🔍 Information Gathering & Reconnaissance 💻 Netcat for Pentester ⚙️ Configuration Management Testing 🔐 Cryptography 🔑 Authentication 🕒 Session Management 📂 Local File Inclusion 🌐 Remote File Inclusion 📁 Path Traversal 💣 OS Command Injection 🔀 Open Redirect 📤 Unrestricted File Upload 🐚 PHP Web Shells 📝 HTML Injection 🌟 Cross-Site Scripting (XSS) 🔄 Client-Side Request Forgery 🛑 SQL Injection 📜 XXE Injection 🎁 Bonus Section #infosec #cybersecurity #cybersecuritytips #microsoft #redteam #informationsecurity #CyberSec #microsoft #offensivesecurity #infosecurity #cyberattacks #security #oscp #cybersecurityawareness #bugbounty #bugbountytips 🔹 Share & Support Us 🔹 📱 Channel : @Engineer_Computer