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# sysadmin

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How a passwordless Redis install led to a full rootkit and why I started running honeypots to protect my servers

How a passwordless Redis install led to a full rootkit and why I started running honeypots to protect my servers

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3 min read
30 days of solo dev shipping: 9 projects, 1 VPS, no Docker — what I actually learned

30 days of solo dev shipping: 9 projects, 1 VPS, no Docker — what I actually learned

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8 min read
5 boring patterns I used to ship two production services on a $5 VPS in 10 days

5 boring patterns I used to ship two production services on a $5 VPS in 10 days

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7 min read
Atualizar Moodle 4.5 para 5.1.1: Corrigir /public, DocumentRoot e Plugins [2026]

Atualizar Moodle 4.5 para 5.1.1: Corrigir /public, DocumentRoot e Plugins [2026]

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14 min read
LPIC-1: Guia Completo para Passar nos Exames 101-500 e 102-500 [2026]

LPIC-1: Guia Completo para Passar nos Exames 101-500 e 102-500 [2026]

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8 min read
Linux Essentials 010-160: Guia Completo para Passar no Exame [2026]

Linux Essentials 010-160: Guia Completo para Passar no Exame [2026]

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8 min read
Finding Portable Software Across 10,000 Endpoints When SCCM Wasn’t Enough

Finding Portable Software Across 10,000 Endpoints When SCCM Wasn’t Enough

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1 min read
Locking Down WHMCS: Nginx, Fail2ban, and What Nobody Tells You

Locking Down WHMCS: Nginx, Fail2ban, and What Nobody Tells You

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6 min read
DNS Not Working? Here's How to Fix It in 5 Minutes

DNS Not Working? Here's How to Fix It in 5 Minutes

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4 min read
How to Pick the Right Public DNS Server (And Why It Matters)

How to Pick the Right Public DNS Server (And Why It Matters)

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4 min read
Replacing SCCM with FOG Project

Replacing SCCM with FOG Project

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9 min read
VICIdial for Collections Agencies in 2026: Third-Party Collections, Skip Tracing, and Regulation F Configuration

VICIdial for Collections Agencies in 2026: Third-Party Collections, Skip Tracing, and Regulation F Configuration

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11 min read
VICIdial vs Convoso in 2026: Updated Pricing, Features, and What Convoso Still Won't Tell You

VICIdial vs Convoso in 2026: Updated Pricing, Features, and What Convoso Still Won't Tell You

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11 min read
Hosted vs Self-Hosted Predictive Dialer in 2026: The Real Cost Breakdown at Every Scale

Hosted vs Self-Hosted Predictive Dialer in 2026: The Real Cost Breakdown at Every Scale

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13 min read
Speech Analytics for Call Centers: From Call Recordings to Automated QA Without a Six-Figure Platform

Speech Analytics for Call Centers: From Call Recordings to Automated QA Without a Six-Figure Platform

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12 min read
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