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coolvds.com › Blog › Security & Compliance

Paranoia is a Virtue: Hardening Remote Access with OpenVPN on CentOS 5

· CoolVDS Team

Public WiFi is a security minefield. In this guide, we bypass the dangers of unencrypted networks by deploying a production-grade OpenVPN tunnel on a Norwegian VPS, utilizing the protection of Datatilsynet and the speed of NIX.

coolvds.com › Blog › Server Administration

OpenVZ vs. Xen: The Dirty Truth Behind Your "Guaranteed" RAM

· CoolVDS Team

Is your 512MB VPS actually yours? We crack open /proc/user_beancounters to reveal the reality of overselling, kernel sharing, and why serious Norwegian deployments need honest virtualization.

coolvds.com › Blog › Security & Compliance

Paranoia is a Virtue: The 2010 Guide to Linux Server Hardening in Norway

· CoolVDS Team

In an era of automated botnets and script kiddies, a default Linux install is a ticking time bomb. Learn the battle-tested strategies to lock down your VPS, comply with Norwegian data laws, and sleep soundly knowing your iptables are holding the line.

coolvds.com › Blog › Security & Compliance

Lock It Down: Essential Linux Server Hardening for Norwegian Enterprises

· CoolVDS Team

The default Linux installation is not secure. From locking down SSH to configuring iptables, here is the battle-tested guide to securing your VPS against the rising tide of automated botnets targeting European infrastructure.

coolvds.com › Blog › Server Administration

Apache vs. Lighttpd: Surviving the C10k Problem on Linux

· CoolVDS Team

Is your Apache server choking on keep-alive connections? We dissect the architectural differences between the industry standard Apache 2.2 and the event-driven challenger Lighttpd to determine which daemon belongs on your Norwegian VPS.

coolvds.com › Blog › Hosting Solutions

OpenVZ vs. Xen: Why "Burst RAM" is a Lie and True Isolation Matters

· CoolVDS Team

Is your budget VPS slowing down during peak hours? We dive into the kernel-level differences between OpenVZ containers and Xen virtualization to explain why 'guaranteed resources' are often anything but.

coolvds.com › Blog › Database Management

MySQL 5.1 Performance Tuning: Surviving High Load with InnoDB and Xen

· CoolVDS Team

Is your database locking up under traffic spikes? Stop using MyISAM. We dive deep into my.cnf optimization, the InnoDB Plugin, and why disk I/O on 15k SAS drives (or SSDs) matters more than CPU for Norwegian VPS hosting.

coolvds.com › Blog › Security & Compliance

Linux Server Hardening: Survival Guide for the Norwegian Sysadmin

· CoolVDS Team

The internet is a hostile environment. Learn how to lock down your CentOS or Debian VPS against brute-force attacks and script kiddies using tools like iptables and Fail2Ban, while keeping your data compliant with Datatilsynet standards.

coolvds.com › Blog › Server Administration

OpenVZ vs. Xen: The Truth About "Guaranteed" Resources in 2010

· CoolVDS Team

Is your cheap VPS actually a trap? We dissect the OpenVZ architecture, expose the 'burst RAM' myth, and explain why serious sysadmins in Norway are moving to Xen/KVM for true isolation.

coolvds.com › Blog › Server Administration

OpenVZ Containers: The Good, The Bad, and The "Failcnt"

· CoolVDS Team

Is your VPS acting sluggish during peak hours? We dive deep into the kernel-level mechanics of OpenVZ, the infamous `user_beancounters`, and why true hardware isolation is the only path for serious Norwegian enterprises.

coolvds.com › Blog › Server Administration

Silence the Pager: Proactive Monitoring with Nagios and Munin

· CoolVDS Team

Stop reacting to downtime at 3 AM. Learn how to combine Nagios for immediate alerting and Munin for historical trending to build a bulletproof monitoring stack on your Norwegian VPS.

coolvds.com › Blog › Performance Optimization

Stop Letting Apache Devour Your RAM: The PHP-FPM Migration Guide

· CoolVDS Team

Is your VPS swapping to death under load? It's likely mod_php. We dive deep into replacing Apache's prefork module with Nginx and PHP-FPM to handle high concurrency on Norwegian infrastructure.

coolvds.com › Blog › Database Management

MySQL Performance Tuning: Surviving the Digg Effect with InnoDB

· CoolVDS Team

Is your database locking up under load? Stop blaming PHP. A senior architect's guide to my.cnf optimization, transitioning from MyISAM to InnoDB, and why disk I/O on your VPS is likely the bottleneck.

coolvds.com › Blog › Server Administration

OpenVZ vs. Xen: The Truth About Container Virtualization in 2009

· CoolVDS Team

Is your budget VPS holding your application back? We analyze the technical trade-offs of OpenVZ containers versus hardware virtualization, the risks of 'noisy neighbors', and why kernel independence matters for your hosting strategy in Norway.