Which sites must stay blocked
Unsafe and malicious sites, and any categories your business needs blocked.
Technology guide
Block the fake login page when someone clicks.
DNSFilter checks each web address against its threat and category rules before a connection opens, on devices in the office and away from it. It is the layer that catches the click a phishing email still gets. Kritical can quote it, set it up and agree the rules with you, to keep unsafe sites blocked.
On this page
Choose where to start.
Jump to the part that matches the problem or decision in front of you.
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What DNSFilter says it does.
DNSFilter describes a DNS-based security and content filtering service. It checks each domain request against threat and content rules before a connection opens, can filter by content category or block specific apps, and works on devices on and off the office network without extra hardware. It also provides reporting and logs.
What to settle first.
The product is the easy part. The rules are where the value sits, and they are easy to misjudge.
Who approves an exception
A named person, and how quickly they can act on an unblock request.
Which devices are covered
Office computers, laptops at home and mobile phones.
Who this page is for.
Three situations bring people here.
Staff click links
Phishing reaches inboxes and you want a net under the click.
People work away from the office
The office firewall does not see a laptop at home.
A customer or insurer wants evidence
You need reports of what is blocked and who reviews it.
What the work involves.
DNS filtering is simple to switch on and easy to misjudge. The setup decides what it protects.
List the devices and networks
Office computers, laptops that leave the building and the guest Wi-Fi, so nothing is left outside the filter by accident.
Set the rules with you
We start with threats and unsafe sites, then agree any further categories with the people responsible for them.
Test before it goes live
We try the common sites your staff use and the ones that have caused trouble, so a good site is not blocked on day one.
Agree the exception process
A named person approves an unblock request and we set up how requests reach them and how fast they are answered.
How Kritical helps.
We start with your devices, your users and the sites they must and must not reach. We quote DNSFilter and the setup work together, then configure it and test it with you. There is no fixed price because it depends on the number of users and locations.
What happens after you get in touch.
A conversation does not need a finished plan to start.
The first call
We talk through your users, where they work and the sites that have caused trouble. No commitment.
A written quote
You receive a plain-English quote that shows the product and the setup work separately.
Setup and handover
We set it up, test it and show your people how it works before we hand it over.
Find the service for your requirement.
Open the relevant service for the scope, delivery approach and next step.
Business email compromise & phishing
Business email compromise is a message that looks like it came from your boss, your supplier or your bank and asks someone to pay, change bank details or sign in.
Cybersecurity
Kritical assesses configuration, prioritises remediation and implements agreed security improvements across identity, endpoints, networks and infrastructure.
Secure work anywhere
Your people should be able to pick up a managed device in the office, at home, at a client site, in a hotel, cafe or airport and keep working without bypassing security to get things done.
Managed IT
When something stops working, your team should know exactly where to turn and roughly when it'll be fixed.
Start from the work you are buying.
Business owners & operations
When computers, email, access, security and business software need attention at the same time, Kritical works out what to fix first, what to manage ongoing, and what it will cost — in writing, before you commit to anything.
IT leaders & delivery teams
When a hard problem crosses infrastructure, identity, applications, security and AI, Kritical aims to provide continuity through a consistent lead or delivery group where the agreed scope and service model support it. The proposal sets out the contact model, cover and handover arrangements so ownership remains clear. We price the work in writing and hand over the agreed operating information.
Read more from DNSFilter.
Use the vendor guide to understand the platform, then talk with Kritical about making it work in your environment.
DNSFilter overview (opens in a new tab)
Read DNSFilter’s description of its filtering service, then agree which sites to block and who approves exceptions.
Questions before you enquire
Does it slow browsing down?
DNSFilter says the check happens as the address is looked up. We test it on your devices during setup and tell you what we see.
Can staff still reach a site that was blocked by mistake?
Yes. Exceptions are approved by the person you name, and we set up the process with you.
Does it replace email filtering?
No. It stops bad sites, and email filtering stops bad messages. They work best together.
What should we send with an enquiry?
Tell us how many users and devices you have and where they work. Never include passwords or confidential records.
Related services
Business email compromise & phishing
Business email compromise is a message that looks like it came from your boss, your supplier or your bank and asks someone to pay, change bank details or sign in.
Cybersecurity
Kritical assesses configuration, prioritises remediation and implements agreed security improvements across identity, endpoints, networks and infrastructure.
Secure work anywhere
Your people should be able to pick up a managed device in the office, at home, at a client site, in a hotel, cafe or airport and keep working without bypassing security to get things done.
Managed IT
When something stops working, your team should know exactly where to turn and roughly when it'll be fixed.
Technologies
Explore the platforms Kritical can help you select, deploy, connect and operate.
Let’s define the next step.
Tell us what you want to achieve, what you have today and when it matters.