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MdmHost guides
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1,794 practical guides for cPanel, Plesk and DirectAdmin, Linux and Windows servers, websites, databases, DNS and security, from your first login to troubleshooting.
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- Getting startedYour first hour with a new server: access, logins and basics.83 guides
- cPanelFiles, databases, email, domains and every cPanel tool, step by step.67 guides
- WHM & resellingWHM, packages, reseller accounts, WHMReseller and running a hosting brand.53 guides
- WordPressInstall, secure, speed up, migrate and fix WordPress sites.49 guides
- Email & webmailMailboxes, webmail, forwarders, spam filters and email delivery.67 guides
- DomainsRegistering, transferring and managing domains and nameservers.27 guides
- SSL certificatesFree AutoSSL, Let's Encrypt, paid certificates and HTTPS.41 guides
- CloudLinuxCloudLinux setup and use: LVE limits, CloudLinux Manager, CageFS and PHP/Node.js selectors.31 guides
- LiteSpeedLiteSpeed Web Server, LSCache and the LiteSpeed Cache plugin: install, settings and tuning.35 guides
- Imunify360Malware scanning, firewall and proactive defence with Imunify360.24 guides
- SoftaculousInstall, update, clone and back up apps with Softaculous.24 guides
- WP SquaredcPanel's WordPress platform: sites, plugins, staging and backups.9 guides
- SitePadBuild and publish websites with the SitePad builder.9 guides
- SitejetDesign, edit and publish sites with the Sitejet builder.9 guides
- WHMResellerAlpha and master resellers with WHMReseller: install, setup and use.12 guides
- VirtFusionInstall, set up and manage VirtFusion: hypervisors, packages, servers and WHMCS integration.28 guides
- VirtualizorManage your VPS with Virtualizor: power, OS reinstall, VNC, IPs and backups.44 guides
- PleskWebsites, email, databases and settings in the Plesk panel.53 guides
- DirectAdminUsers, domains, email and reseller tools in DirectAdmin.41 guides
- WHMCSBilling, automation, products and client management with WHMCS.52 guides
- Control panelscPanel & WHM, Plesk, DirectAdmin and other panels on your VPS.107 guides
- SecurityKeys, passwords, firewalls and keeping a server patched.138 guides
- Networking & DNSIP addresses, reverse DNS, ports and traffic.72 guides
- Websites & appsWeb servers, WordPress, PHP, Node.js, SSL and app hosting.83 guides
- DatabasesMySQL, MariaDB, PostgreSQL, Redis and MongoDB on a VPS.80 guides
- Billing & accountInvoices, renewals, the client area and your account.9 guides
- TroubleshootingWhen something is not working: checks and fixes.127 guides
- Linux VPSSSH, packages, services and everyday Linux administration.265 guides
- Windows VPS & RDPRemote Desktop, Windows Server settings and Admin RDP tips.73 guides
- Docker & DevOpsContainers, Git deploys, automation, monitoring and backups.82 guides
Popular guides
Windows VPS & RDP
Connect to your Admin RDP from Windows, Mac and phone
Find your login details, then connect to your Admin RDP or Windows VPS with the free Remote Desktop clients for Windows, macOS, iPhone and Android.
cPanel
How to log in to cPanel (MdmHost dashboard, URL and port 2083)
All the ways to open your cPanel account: one click from the MdmHost dashboard, the direct cPanel URL on port 2083, and what to do when the login fails.
Troubleshooting
Fix "Remote Desktop can't connect to the remote computer"
Check the server is running, test the RDP port, rule out network blocks and repair Remote Desktop settings from the browser console.
Getting started
Set up a private remote work desktop on Admin RDP
Secure your Admin RDP, install everyday apps, personalise it, and learn when to disconnect versus sign out so your work keeps running.
cPanel
Restore files and folders from JetBackup 5 in cPanel
Restore deleted or broken website files from MdmHost's daily JetBackup 5 snapshots in cPanel: pick a date, choose files or folders, and restore or download them.
Explore all guides
A fresh mix every day. Pick a topic above to narrow it down.
Advanced Nginx load balancing with upstream directives
Use Nginx upstream blocks to spread traffic across several backends: pick a balancing method, set weights and backups, tune passive health checks and keep connections alive.
CPU pinning and overcommit on KVM explained
How vCPUs map to physical cores, what CPU and RAM overcommit mean for VPS performance, how to measure steal time, and how to pin vCPUs with virsh for latency-sensitive VMs.
DDoS protection basics for websites and servers
Understand what a DDoS attack is, the difference between network floods and application-layer attacks, and the practical steps that keep a hosted site or VPS online.
Set reverse DNS (rDNS/PTR) for your VPS IP in Virtualizor
Set a PTR record for your VPS IPv4 and IPv6 addresses in Virtualizor, match it with forward DNS and the hostname, and improve email deliverability from your VPS.
What is reverse DNS (rDNS) and why it matters
Reverse DNS maps an IP address back to a hostname using a PTR record. Learn how it differs from normal DNS, why mail servers check it, and how to look it up from your own computer.
Install XCP-ng and manage it with Xen Orchestra
Install the open-source XCP-ng hypervisor on a server, choose storage, connect Xen Orchestra for web management, create your first VM, and install guest tools.
How to limit outgoing email per account in WHM
Set hourly email limits and bounce thresholds per cPanel account or package in WHM so a hacked form or spammer cannot damage your shared IP reputation.
Caddy redirects, headers, gzip/zstd compression and caching
Practical Caddyfile recipes for www redirects, moved pages, gzip and zstd compression, security headers and browser cache rules, organised cleanly with handle blocks.
Set up Unbound as a local caching DNS resolver on a server
Install Unbound as a private recursive, validating DNS resolver for your server or network, restrict who can query it, enable DNSSEC validation and point the system at it.
What is VirtFusion? The KVM VPS control panel explained
An overview of VirtFusion: how the control server and hypervisors fit together, what admins and end users can do, how it compares to Virtualizor and SolusVM, and who it suits.
SSH Hardening: Mitigating Man-in-the-Middle Attacks with Host Key Verification
SSH host key verification makes your client confirm the server's identity before you send credentials. This guide shows how to read fingerprints, verify them out of band, pin them in known_hosts and rotate host keys without locking yourself out.
Add and assign IP addresses in DirectAdmin (admin)
Add IPv4 and IPv6 addresses in DirectAdmin IP Management, set them as shared or free, assign IPs to resellers and users, and change the server's main IP.
cpmove files explained: what is inside a cPanel account backup
What a cPanel cpmove or full backup file contains, how it differs from partial backups, how to create one, and who can restore it on a new cPanel server.
Use LiteSpeed Cache on any PHP site with .htaccess rules
Cache pages of a custom PHP site or an app without an LSCache plugin using LiteSpeed rewrite rules in .htaccess, with safe exclusions for logged-in users and carts.
Free disk space with docker system prune
Find out how much space Docker uses with docker system df, then safely prune unused images, build cache, stopped containers and volumes, and schedule a cleanup that never touches your data.
Install and enable the QEMU guest agent in Proxmox VMs
Enable the QEMU guest agent so Proxmox can see VM IPs, shut down cleanly, freeze filesystems for consistent backups and run commands, on Linux and Windows guests.
Configure firewalld on AlmaLinux and Rocky Linux
Learn the firewalld basics on AlmaLinux and Rocky Linux: zones, opening services and ports, permanent versus runtime rules, and IP-restricted access.
Virtual networking for VMs: bridges, NAT and VLANs
Understand how virtual machines connect to the network: Linux bridges, NAT with libvirt's default network, routed setups, VLAN tagging and Open vSwitch, with configuration examples.
Node.js WebSockets behind Nginx, Apache, LiteSpeed or cPanel
Make Socket.IO or ws WebSockets work behind a reverse proxy: upgrade headers for Nginx, Apache and LiteSpeed, timeouts, wss:// over SSL and cPanel limits.
CloudLinux Manager admin settings: limits, packages and reseller limits (root guide)
Configure CloudLinux Manager in WHM as root: default LVE limits, per-package limits, enabling reseller limits, fault notifications and selector options.
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