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Practical guides, infrastructure notes, and lessons for running your corner of the internet.
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128 articles-
How to Design a VPS Firewall Policy You Can Maintain
Start from required connections, give every rule an owner, and verify both allowed traffic and traffic that should stay blocked.
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DNS Round Robin: Useful Distribution, Limited Failover
Multiple addresses can distribute requests, but reliable failover also needs health decisions, shared application state, and tested recovery.
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MTU and Path Discovery: Why Small Requests Work but Large Transfers Stall
Packet size can explain a connection that starts normally and stalls later. Gather targeted evidence before changing MTU settings.
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VPS Connection Timeout Checklist: DNS, Listener, Firewall, and Route
Work through the connection in order and distinguish a timeout from refusal or an application error before changing access rules.
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Why Low Ping Does Not Guarantee a Fast VPS Website
Ping measures a small part of a visitor's experience. Build a page-speed investigation around the steps that actually consume time.
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How to Read an MTR Report Without Mistaking Every Hop for Packet Loss
Read the destination first, compare later hops, and capture the time and direction before deciding where a network problem begins.
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TCP vs UDP: What Changes When You Host an Application
A port number is only half a firewall rule. Match the transport protocol and test the behavior your application actually needs.
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CIDR and Subnet Planning for Small VPS Environments
A simple address plan prevents routing surprises. Budget host addresses, reserve room for gateways, and check networks you may connect later.
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IPv4 vs IPv6: A VPS Application Readiness Checklist
IPv6 readiness spans DNS, listeners, firewalls, and application assumptions. Audit those layers without advertising an address that does not work.
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Subdomains vs Subdirectories: Hosting and Security Tradeoffs
Choose a URL structure by the operational boundary you need, then account for routing, browser security, and deployment ownership.
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DNSSEC During a Domain Migration: A Practical Coordination Checklist
DNSSEC links parent and child DNS data. A provider migration must preserve or deliberately transition that chain of trust.
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CAA Records Explained: Avoid Certificate Issuance Surprises
A CAA record is a certificate issuance policy. Inventory it alongside your certificate client before moving a site or changing authorities.
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