Knowledge, ideas and technology with real impact.
Technical notes, architecture thinking and practical guides for people responsible for infrastructure, security and operations.
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Sizing Wazuh and OpenSearch
Daily volume, replicas, shard counts and retention maths for a Wazuh indexer.
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Multi-ISP SD-WAN Failover: Design and Testing
Independent links, FortiGate health-check timers and a failover test you can repeat.
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Scoping a VAPT Engagement in India
Objectives, rules of engagement, CERT-In requirements and what a useful report contains.
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Setting RTO and RPO You Can Actually Test
Turn recovery targets into backup engineering and prove them with timed restore tests.
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SPF, DKIM and DMARC: A Staged Rollout
Move a domain to DMARC p=reject without blocking legitimate mail, with Microsoft 365 and Google Workspace steps.
Read →Multi-Cloud Transit Architecture: AWS Direct Connect & Azure ExpressRoute
Connecting cloud providers with deterministic BGP routing, MED filtering, and sub-second BFD failover.
Read →ZTNA Migration Playbook: Retiring Legacy SSL-VPN for FortiSASE
Phasing out perimeter VPNs with continuous posture checks, identity verification, and application proxies.
Read →VMware to Proxmox VE & Ceph Storage Migration Playbook
Navigating the Broadcom licensing pivot with resilient KVM clusters, NVMe Ceph fabrics, and live VM migration.
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How to Design a Reliable Enterprise Network
Structure network design around trust boundaries, dependencies, visibility and recovery.
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Why Backup Testing Matters
A backup policy is incomplete until restore assumptions have been tested and documented.
Read →How Centralized Logs Improve IT Visibility
Turn logs into operational evidence with sensible collection, retention and alerting.
Read →Building a Secure Hybrid Cloud
Design identity, connectivity, security controls and recovery together.
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Network Segmentation for Universities
Separate user, lab, administration and guest access without losing visibility.
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Preparing an Organization for Ransomware Recovery
Design a recovery path before the incident: isolation, restore, testing and reconnection.
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FortiGate Architecture Planning
Questions to answer before changing firewall policy, VPN, NAT and SD-WAN.
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NAC Deployment Fundamentals
Practical foundations for identity-aware access, RADIUS and VLAN assignment.
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Microsoft 365 Conditional Access Baseline
Licensing, emergency access accounts, Microsoft’s Secure foundation templates and report-only rollout.
Read →IT Infrastructure Assessment Checklist
A practical checklist for servers, storage, network, identity, security and recovery.
Read →Veeam Hardened Repository on Rocky Linux
Architecture guide for deploying immutable backup vaults with XFS reflink, zero root SSH exposure, and air-gapped ransomware protection.
Read →Carrier BGP Routing & CGNAT on MikroTik CCR
Production blueprints for multi-100G BGP peering, stateful CGNAT translation, and dynamic subscriber QoS on MikroTik Cloud Core Routers.
Read →Purdue Model Architecture: Industrial OT Security
Air-gapped segmentation frameworks for SCADA and PLC control systems across industrial manufacturing plants with DMZ isolation.
Read →Private LLMs in India: DPDP Compliance Guide
How the DPDP Act and Rules apply to self-hosted LLMs, and which engineering controls answer each obligation.
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