Glossary Entry
What is TLS?
What TLS actually means, buzzwords removed — with the example that makes it land.
The short answer
TLS is the cryptographic protocol doing the real work behind HTTPS, the modern successor to SSL, whose name everybody still uses out of habit.
The rest of the page opens it up — the mechanics, why a site owner should care, and one concrete example of it at work.
By the Hosting & Domains team · Reviewed 18 August 2026
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Jargon left undefined
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Every connection opens with a handshake: the certificate gets checked, session keys are agreed, and traffic then flows under symmetric encryption because that is far cheaper to run. Versions matter. TLS 1.2 and 1.3 are current, with 1.3 both quicker and stricter, while anything older is retired ground that only hands attackers a target.
Its reach extends well beyond web pages. The same machinery wraps mail submission, APIs and most modern protocols: different ports, the same guarantees at the end of them.
The everyday parallel
The procedure before the sealed letter is even written: credentials checked at the door, a private cipher agreed between two parties, and only then does anybody say anything worth overhearing.
Carry that picture with you and most documentation on the topic loses its mystery on a first read.
What genuinely rides on it
TLS version hygiene stays invisible until the moment an old version trips a compliance scan or a client refuses to connect. On managed hosting, keeping it current is ours. On a VPS it turns into a line in your own configuration for you to maintain.
That, incidentally, is the bar for any technical term — not 'could I lecture on it' but 'would I recognise it as the answer to my problem'. For this one, you now would.
How it turns up day to day
A current browser and server finish a TLS 1.3 handshake in one round trip. Identity is settled and the channel encrypted before a single byte of the page has moved.
Scale that example across every website online and you have described the whole job of the concept in one stroke.
How Hosting & Domains deals with it
Here it largely looks after itself, since the defaults are sensible and the panel puts the controls within reach the moment you want them. Read on: SSL Certificate, HTTPS, Encryption and SMTP.
The rate you register at is the rate you renew at, so year two costs precisely what year one did — nothing lying in wait on the invoice.
A jargon buster from the people who answer the tickets
An unexplained piece of jargon is, to us, a service defect. This is the support team's collected translations, published where a search engine can hand them over on our behalf.
Order an annual plan and the first year of the name's registration is on us.
- 100+ entries, plain English all the way
- Ordinary analogies, working examples
- Neighbouring ideas linked together
- Written by our own support engineers
Why Hosting & Domains
Standard on every plan
Stakes made explicit
More than what a thing is: the moments it turns out to be the answer to a problem you have.
Cross-wired entries
Related terms point at each other, so one lookup compounds into working knowledge.
The next step, drawn out
Carry on into SSL Certificate and HTTPS — ideas rarely travel alone, so the neighbours are linked in.
Analogies that hold
Every concept comes with a mental model that returns exactly when you need it.
This term, properly landed
TLS defined, pictured by analogy and located in your own panel — recognise-level after a single read.
Tied to real hosting
Examples name platforms you would genuinely use, never an abstract diagram on a whiteboard.
Quick Start
Order placed to site online
- 1
Find it in your own account
Nothing teaches a hosting term faster than finding it in your own panel; five minutes of looking beats an hour of reading.
- 2
Check the defaults as they stand
Look at how your account has it configured. Nine times in ten the default is right, and a check turns the guess into certainty.
- 3
Chase the neighbouring terms
Hosting terms travel in groups — SSL Certificate, HTTPS and Encryption finish this one's picture, each a two-minute read away.
Built In
Fitted to every plan
- Webmail in the browser plus IMAP, POP and SMTP for any client
- 99.9% uptime as the target, watched around the clock
- Softaculous included for one-click application installs
- cPanel, which is what most of the industry already runs
- Mailboxes that answer at the name you hold
- A daily copy, with restores you run yourself from the panel
- Upgrades applied in place, with no migration when you change plan
- WebP image optimisation built in, at no extra charge
- WordPress Toolkit, with the updates seen to for you
- A renewal figure identical to the one you registered at
Frequently Asked
The questions that come up most
Am I using SSL or TLS?
TLS. Nothing current will negotiate the genuine SSL protocols, which were retired long ago. All that survives of the acronym is the product name on 'SSL certificates'. The label is nostalgic; the protocol beneath it is anything but.
Do I have to set TLS versions myself?
Not where hosting is managed, since keeping versions current and ciphers sensible comes with the platform. On a VPS you set it in the nginx or Apache configuration, where the modern defaults are a solid starting point, and public scanning tools will grade your choices for anybody who asks.
How do payments and auto-renewal work?
You pay by credit or debit card through a secure checkout, and renewals bill at the same rate as the original order. Every invoice sits in your client area, and auto-renewal switches off with a toggle in the account — no telephone call needed.
Can I choose the PHP version myself?
Yes — PHP is set per site from the control panel, so a legacy application and a current one can run side by side in one account. Extensions and per-site tuning are on the same screen, and none of it goes near a support ticket.
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