SysAdminNetworkingSecurityLinuxFree SSL with Let's Encrypt and Caddy: Complete Setup Guide for Self-Hosted AppsSet up automatic HTTPS for your self-hosted apps using Caddy and Let's Encrypt — zero manual certificate management. Covers reverse proxy, wildcard certs, internal networks, and real production configs.June 23, 202611 min read
NetworkingVPNVLANSysAdminL2 Tunneling Protocols Explained: GRE, L2TP, VXLAN and When to Use EachA practical guide to Layer 2 tunneling — how GRE, L2TP, and VXLAN work, their differences, real configuration examples on Linux and Cisco, and which to use for different network scenarios.June 22, 202611 min read
NetworkingSNMPRaspberry PiNMSSysAdminRaspberry Pi as a Network Monitor: Complete Setup Guide with SNMP, Grafana & AlertsTurn a Raspberry Pi into a full network monitoring station — polling SNMP devices, storing metrics in InfluxDB, visualizing with Grafana, and sending alerts. Step-by-step with real configs.June 20, 202611 min read
SysAdminDevOpsSharePoint Setup and Configuration for Teams and OrganizationsA step-by-step guide to configuring SharePoint Online — site creation, document libraries, permissions, workflow automation, and integration with Microsoft Teams.February 17, 20267 min read
SysAdminSecurityMicrosoft 365 Admin Center — Management, Security, and Best PracticesA practical guide to managing Microsoft 365 through the Admin Center — user management, license assignment, security configuration, Exchange, and Teams administration.February 16, 20266 min read
SecurityOpen SourceSysAdminOpenVAS Vulnerability Assessment — Setup, Scanning, and ReportingHow to deploy and use OpenVAS (Greenbone Vulnerability Management) for automated vulnerability scanning — installation, scan configuration, result analysis, and remediation.February 13, 20267 min read
NetworkingNMSSysAdminNetwork Monitoring Best Practices for Small to Medium NetworksA practical guide to network monitoring for SMB and enterprise networks — what to monitor, polling strategies, alerting without fatigue, baselining, capacity planning, and tool selection.February 10, 202611 min read
NetworkingSysAdminNetwork Topology Design — Star, Ring, Mesh, and Hybrid for Enterprise NetworksHow to choose and design the right network topology for enterprise, industrial, and campus networks — with real-world architecture examples and redundancy planning.February 6, 20265 min read
NetworkingSysAdminVLANManaged Switch Configuration — VLANs, Trunking, STP, and Port SecurityA step-by-step guide to configuring managed network switches — VLAN setup, trunk ports, Spanning Tree Protocol, port security, and monitoring for enterprise networks.February 5, 20266 min read
NetworkingSysAdminVLANAchieving 1 Gbps Data Transfer Using VLAN ConfigurationHow to design and configure VLANs for maximum throughput — reaching full 1 Gbps transfer speeds through proper VLAN design, trunk configuration, and performance tuning.February 4, 20266 min read
NetworkingIoTSysAdminSecurityAccessing Remote Devices Without a Public IP — Tunneling, Reverse Proxy, and CGNAT SolutionsHow to reach IoT devices, servers, and equipment behind NAT or CGNAT without a public IP address — using reverse tunnels, VPN, and cloud relay services.February 2, 20266 min read
NetworkingSecuritySysAdminHow to Use L2 VPN — Site-to-Site Layer 2 Connectivity GuideA practical guide to Layer 2 VPN technologies — VPLS, EVPN, L2TP, and pseudowires — for extending LANs across geographically distributed sites.January 31, 20266 min read
SecurityNetworkingSysAdminIntrusion Prevention System (IPS) — Setup, Configuration, and Best PracticesA practical guide to deploying and configuring an Intrusion Prevention System for network security — from architecture to rule tuning and open-source options.January 23, 20266 min read