Hosting Glossary
Firewall
What Firewall actually means, minus the jargon — with the example that makes it obvious.
The short answer
A firewall filters network traffic by rule — deciding which connections may reach which services, and refusing the rest by default.
Below: the fuller explanation, an analogy that makes it stick, why it matters in practice, and where you'll actually meet it.
100+
Terms in this glossary
2 min
Average read
Plain
English, promised
24/7
Humans if you're stuck
On servers the model is default-deny inbound: explicitly allow SSH and web ports, and everything else becomes unreachable. Host firewalls (ufw, firewalld) enforce per-machine; network-level protection filters upstream.
It's the complement to application security — the firewall bounds what's reachable at all; the WAF and application hygiene govern what happens on the ports that are.
The analogy version
The gatehouse with a guest list — named visitors to named departments pass; everyone else meets a closed gate rather than an unlocked lobby.
Hold onto that picture and most of the documentation you'll ever read about it becomes considerably less mysterious.
Why you should care
An unfirewalled server exposes every running service to the internet's continuous scanning — the five-command default-deny setup is among the highest-value minutes in server administration.
That's the test for every technical term, incidentally — not 'do I understand it fully' but 'do I know when it's the answer to my problem'. For this one, now you do.
A concrete example
A VPS runs a database privately — the firewall allows web ports publicly and the database port to localhost only, so the scanners probing it worldwide meet silence.
Multiply that example across every site on the internet and you have the concept's entire job description.
How this shows up in your hosting
On our hosting this mostly takes care of itself — the platform applies the sensible defaults, and the panel exposes the controls when you want them. The concepts worth knowing next: WAF, DDoS Attack, VPS and SSH.
Every plan includes free SSL that renews itself, so the padlock is never your job.
Jargon is a service failure
Every confusing term in hosting eventually becomes a support ticket — so we defined the hundred most common ones properly, once, in the plain English we'd use on the phone.
Support is answered by real people around the clock — including the questions other hosts call out of scope.
- 100+ terms, plain English
- Analogies and real examples
- Cross-linked related concepts
- Written by the support desk
Why HostingAlly
What you get with every plan
Grounded in a real platform
Examples reference the hosting you'd actually use, not abstract diagrams.
Plain English first
Every term defined for site owners, not for other sysadmins — jargon translated, not restated.
The practical stakes named
Not just what it is — when it's the answer to a problem you're having.
Honest about what you can skip
Most terms are recognise-level, not operate-level — the glossary says which is which.
Linked, not siloed
Related terms cross-reference, so one lookup becomes a working understanding.
Analogies that stick
Each concept gets a picture you'll remember at the moment you actually need it.
Getting Started
How to get going
- 1
Spot it in your own setup
The fastest way to learn a hosting term is to find it in your own panel — five minutes of looking beats an hour of reading.
- 2
Check the defaults
Our platform ships sane defaults for this — verify rather than assume, and you'll know your setup instead of hoping about it.
- 3
Follow the related terms
Concepts travel in packs — WAF, DDoS Attack and VPS complete this one's picture, and each is a two-minute read away.
Included
What's covered on our plans
- 24/7 support from real people
- 99.9% uptime commitment, monitored around the clock
- Per-site PHP version selection
- One-click installer for WordPress and 400+ apps
- Daily automatic backups with self-service restores
- Free SSL certificate on every plan, renewed automatically
- NVMe SSD storage as standard
- cPanel — the industry-standard control panel
- Free domain for the first year on annual plans
- SSH, Git and Composer access on developer-friendly plans
FAQ
Your questions, answered
Do shared hosting customers manage a firewall?
No — platform firewalls and protections are host duty (part of what managed means). Firewall administration begins with a VPS, where the machine's gate list is yours to write.
Firewall versus WAF — what's the difference?
Layers — the firewall filters by port and address (can this connection reach the service?); the WAF reads HTTP content on allowed connections (is this request an attack?). Serious setups run both.
What does your 24/7 support actually cover?
Real people at every hour, and a scope that includes the practical questions — email setup, DNS, WordPress issues, restores — not just 'the server is up, ticket closed'. Pre-sales questions are welcome too; ask us something difficult and judge the reply.
Are backups included, and can I restore them myself?
Daily automatic backups are standard, restorable from the panel in minutes — files, databases or both, at 3am without a ticket if that's when you need it. For extra cover, you're welcome to run your own offsite copies alongside.
Can I host more than one website on a plan?
On the Pro tier and above, yes — multiple sites with their own domains, email and SSL under one account. If the extra sites belong to clients rather than you, reseller hosting gives each one proper isolation instead.
Do prices go up at renewal?
No — the price you sign up at is the price you renew at. We don't run teaser-rate economics, so there's no year-two ambush to plan around, and your bookkeeping can rely on the number staying put.
Will you move my existing website for free?
Yes — open a ticket with your current host's access details and we handle the whole move: files, databases, email and configuration, verified by you before DNS switches. The old site keeps serving until the new copy takes over, so visitors never see a gap.
Keep exploring
SSH (Secure Shell)
SSH is the encrypted protocol for operating a server through a terminal — commands, file transfers and tunn…
VPS (Virtual Private Server)
A VPS is a virtual machine carved from a physical server, giving you dedicated resources and root access at…
Domain Names
Search, register and transfer domains — first year free on annual hosting.
Web Hosting
NVMe cPanel hosting with free SSL, migration and a free first-year domain.
Ready when you are.
Free SSL, free migration, honest renewals and 24/7 human support. That's the whole pitch.
See Hosting Plans