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OS Cloud Support Guide

website·Indexed 29 days ago

https://support.oscloud.nl

Documentation for managing websites and services on OS Cloud, including guides for WordPress configuration, email setup (Gmail, Roundcube, SMTP), SSL certificates, DNSSEC, SSH key connection, and troubleshooting common browser errors like ERR_CONNECTION_REFUSED and ERR_NAME_NOT_RESOLVED.

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What's inside OS Cloud

  1. Overview of the Speculation Rules API

    The Speculation Rules API is a JSON-based configuration used to programmatically instruct browsers to prefetch (download resources) or prerender (render the entire page in the background) specific URLs. This provides more granular control over eagerness than traditional link preloading.

    Browser Support: Currently supported only in Chromium-based browsers (Chrome, Edge, Opera). Safari and Firefox ignore these rules.

  2. Overview of ionCube Loader for PHP

    ionCube is a technology used to protect PHP code from being read or copied by compiling PHP scripts into encrypted bytecode. The ionCube Loader is a PHP extension that decrypts and executes this bytecode on the server at runtime. This is typically used for distributing commercial PHP applications while keeping the source code private.

  3. Overview of the Speculation Rules API

    The Speculation Rules API is a JSON-based configuration used to tell the browser to either prefetch (download resources) or prerender (render the entire page in the background) specific URLs. This API provides more granular control over eagerness and supports full-page rendering compared to older link preloading methods.

    Browser Support: Currently supported only in Chromium-based browsers (Chrome, Edge, Opera). Safari and Firefox ignore these rules.

  4. Understand VAT charges for EU and UK customers

    VAT (Value Added Tax) is applied to most goods and services, including digital hosting services, for customers (both individuals and businesses) located in the European Union (EU) and the United Kingdom (UK). The applicable VAT rate is based on the customer's primary residence or the country where the business is legally registered. Services are billed at the standard VAT rate for the respective region.

  5. Understand OSCloud DDoS Protection layers

    OSCloud employs a three-layer defense system to mitigate distributed denial-of-service (DDoS) attacks and prevent server resource exhaustion:

    1. Attack Pattern Recognition: Analyzes incoming traffic to identify the specific type of attack to determine the appropriate countermeasure, rather than relying solely on traffic volume.
    2. Traffic Filtering: Routes detected malicious traffic through scrubbing filters to neutralize common threats, including DNS reflection, NTP reflection, and UDP floods, ensuring only legitimate traffic reaches the server.
    3. Challenge-Response & Dynamic Filtering: Provides real-time adaptation for advanced attacks such as SYN floods, DNS floods, and invalid packets, automatically mitigating new threats without impacting legitimate visitors.

  6. Understand VAT application for EU and UK customers

    Value Added Tax (VAT) is applied to both individual and business customers located in the European Union (EU) and the United Kingdom (UK) for digital services such as hosting. The applicable VAT rate is the standard rate of the customer's primary residence or the country where their business is legally registered.

  7. Understand ionCube Loader functionality

    ionCube is a technology used to protect PHP code from being read or copied. Developers compile PHP scripts into encrypted bytecode, which is then decrypted and executed at runtime by the ionCube Loader (a PHP extension). This is primarily used for distributing and licensing commercial PHP applications while keeping the source code private.

  8. Control search engine crawling with robots.txt

    The robots.txt file is a plain text file located at the domain root (yourdomain.com/robots.txt) used to provide broad instructions to compliant bots about which sections of a site to skip. It is a directive, not a firewall; malicious bots may ignore it, and pages linked from external sites may still be indexed (without content) if disallowed here. To completely hide a page from search results, use the noindex meta tag instead.
    User-agent: *
# Disallow crawling of backend and non-public asset folders
Disallow: /wp-admin/
Disallow: /wp-includes/
Disallow: /wp-content/plugins/
Disallow: /wp-content/themes/

# Allow the AJAX endpoint, used by some frontend functionality
Allow: /wp-admin/admin-ajax.php

# Disallow internal search results to prevent crawl waste
Disallow: /?s=
Disallow: /search/

# Specify your sitemap location
Sitemap: https://www.yourdomain.com/sitemap_index.xml

  9. Understand how FastCGI Cache improves PHP performance

    FastCGI Cache stores the output of PHP pages so that repeated requests are served directly from NGINX. This bypasses the need to execute PHP or perform database queries for every request, reducing page delivery time to milliseconds and significantly improving performance for high-traffic sites.

  10. Understand the purpose of Google Search Console (GSC)

    Google Search Console (GSC) is a free tool provided by Google to monitor, maintain, and troubleshoot a site's presence in Google Search results. While tools like robots.txt or meta tags provide instructions to Google, GSC provides feedback by showing how Google perceives pages and where errors occur. It is primarily used to track search performance and technical health, including identifying search queries that drive traffic, submitting sitemaps for faster crawling, and detecting mobile-usability or indexing issues that may impact search rankings.

  11. Analyze web page performance with PageSpeed Insights (PSI)

    PageSpeed Insights (PSI) is a free Google tool used to analyze web page performance on both mobile and desktop devices. It provides a Performance Score from 0–100, which is a weighted average of Lighthouse metrics and Core Web Vitals, including Largest Contentful Paint (LCP), First Contentful Paint (FCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS).

    Performance Score Ratings:

    • 90–100 (Good): Page is well-optimised and meets modern standards.
    • 50–89 (Needs improvement): Noticeable bottlenecks exist.
    • 0–49 (Poor): Significant issues are likely impacting user retention.
    https://pagespeed.web.dev/

  12. Analyze website security with Mozilla Observatory

    The Mozilla Observatory (specifically the HTTP Observatory) is a free security tool provided by Mozilla and hosted on MDN. It allows website owners and developers to assess their site's security configuration by analyzing HTTP response headers and checking compliance with modern security standards.