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Categories
Tag Archives: whm
The Hidden Domain Name Lock-In: Which Registrars Restrict Nameservers?
When buying a domain name, most website owners assume they can point it wherever they choose. However, depending on where you register your domain, you might run into an unexpected limitation: some registrars do not allow you to change your nameservers.
Instead of simply updating your nameservers to point to a new web host, you are forced to manually manage individual DNS records or transfer the domain out entirely. Many platform-operated registrars enforce these restrictions, keeping your DNS tied to
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Posted in Domain Names
Tagged A records, buy domain name, Cloudflare, Cloudflare registrar, CNAMEs, cpanel, DKIM, DNS management, DNS propagation, dns records, domain names, domain portability, domain registrars, domain transfer, email authentication, mx records, nameservers, platform lock-in, SPF, web hosting, whm, Wix, Wix domain
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How to Whitelist Googlebot, Bingbot in CSF
One way to prevent server load spikes and maintain fast performance is to block problematic IP addresses and IP ranges. However, you have to make sure that legitimate crawlers, such as Googlebot and Bingbot, are not accidentally blocked from accessing your websites. Don't crash your SEO! We covered this important step in, “How to Stop High Server Load from Distributed Botnets, Scrapers, and Database Queue Locks”. If you don't know how to do this whitelisting, this tutorial is for
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In "How to Stop High Server Load from Distributed Botnets, Scrapers, and Database Queue Locks" we talked about how to fix your high server loads. That included adding rules to your site's .htaccess file, or updating the rules globally. If you don't know how to do that yet, this guide is for you.
Crucial First Step: Make a Backup
Before touching .htaccess, always make a copy. A single typo in this file will cause a "500 Internal Server Error" and take
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Posted in Coding, Server Admin & Security
Tagged .htaccess, 500 Internal Server Error, apache, apache configuration, cpanel, file manager, global apache configuration, global rules, include editor, nano text editor, post virtual host include, pre main include, pre virtualhost include, show hidden files, terminal, whm
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How to Stop High Server Load from Distributed Botnets, Scrapers, and Database Queue Locks
When a server load spikes to 30, 50, or 100+, most sysadmins panic and start haphazardly restarting services or blocking random IP addresses. However, modern attacks are rarely as simple as a single bad IP.
Today’s botnets use distributed Layer 7 (HTTP) floods, rotating through hundreds of unique IPs with only 1 connection each, exploiting web server application queues, fake WordPress scanners, background AJAX polling scripts, and WordPress admin-ajax.php endpoints that lock up MySQL.
This comprehensive guide covers how to diagnose,
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Posted in Coding, Server Admin & Security
Tagged .htaccess, 127.0.0.1, 403 Forbidden errors, 404 errors, ajax, ajax polling, ajax requests, apache, apache rate limiting, automated system tasks, bingbot, botnets, cache, caching, cpu, cpu load, cron jobs, csf, csf whitelist, CT_BLOCK_TIME, CT_LIMIT, CT_PORTS, database polling, database queue locks, ddos attacks, distributed attack, Googlebot, high server load, http, ip address, Jeypack, layer 7, linux, load averages, mibew messenger, mod_evasive, mysql, operator refresh time, php, processes, RAM, scrapers, script, server attack, server load, server load spike, subnet attack, sysadmin commands, whitelist, whm, xmlrpc.php
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The Developer’s Guide to Identifying and Optimizing Slow MySQL Queries
This tutorial will guide you through identifying, extracting, and analyzing your most problematic database queries using the command line on a WHM/cPanel server.
If you’re using UltimateWB for your backend, chances are you won’t need any of this. We optimize UltimateWB to run fast whether your website is small or large. But in case you need it - for example, if you are adding complex custom code or building a project from scratch - this guide has you covered.
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Posted in Coding, Server Admin & Security, Web Hosting
Tagged cpanel, database optimization, fast website, guide, mysql, mysql database, mysqldumpslow, optimize database, Percona Toolkit, server performance, slow mysql queries, slow query log, software development, SQL optimization, technical seo, terminal, tutorial, web performance, whm
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