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Practical guides, infrastructure notes, and lessons for running your corner of the internet.
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18 articles-
Rate Limiting a Public VPS Application Without Blocking Normal Users
Different endpoints need different limits. Protect expensive actions while accounting for shared addresses, retries, and real user behavior.
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Webhook Endpoint Security for a VPS-Hosted Application
A webhook is an untrusted inbound request until verified. Design signature checks, durable processing, and retries together.
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Secure Database Connections Between Private VPS Services
A private network reduces exposure, but database identity, authorization, and transport verification still need explicit configuration.
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CORS for Self-Hosted APIs: Allow the Right Browser Origins
CORS governs browser access to cross-origin responses. Keep its allowlist precise while retaining server-side authentication and authorization.
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How to Roll Out Content Security Policy on a Self-Hosted Website
Build CSP around the resources your site needs, observe violations, and tighten the policy while preserving real user journeys.
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Secure Session Cookies for a VPS-Hosted Web Application
Cookie flags are only part of session security. Scope the cookie carefully and verify how sessions are created, rotated, and invalidated.
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Trusted Proxy Headers: Preserve Client IPs Without Trusting Spoofed Values
Forwarded headers are trustworthy only when a known proxy controls them. Map the request path before using them for security decisions.
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HTTPS Redirects and HSTS: Roll Out a Durable Browser Policy
HTTPS redirects and HSTS solve related problems with different persistence. Roll out the browser policy only after the HTTPS paths are ready.
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Monitor TLS Certificate Renewal Beyond the Scheduled Job
A renewal job can succeed while the public service keeps presenting an old certificate. Verify issuance, deployment, and the external handshake.
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Recover from an SSH Lockout Without Erasing Your Security Policy
Use the recovery console to inspect the failed layer, preserve existing access rules, and verify a fresh connection after a narrow correction.
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SSH Jump Hosts: Designing Access to Private VPS Services
A jump host concentrates administrative reachability. Keep individual credentials, destination identity checks, and recovery responsibilities explicit.
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SSH Key Rotation for a Small Team: Inventory, Replace, Verify, Revoke
Give each person and automation job a traceable credential, then rotate access without losing the ability to administer the server.
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