Allow Only Selected Websites on Windows Complete Guide
Most blockers ask which sites to stop. An allowlist flips the question: only the sites you name will open — everything else is blocked by default. That is the right model for billing PCs, exam labs and office desks, and it does not need an expensive firewall.
✍️ Technical Anshu🪟 Windows 10 / 11⏱️ 9 minute read
🎥 Watch the full video — Website Filter Pro setup and allow mode, step by step
Blocking websites one by one is a losing game — the internet is endless, and every list of bad sites is outdated the day it is written. An allowlist ends the game: you write down the handful of sites a PC genuinely needs, and the filter refuses everything else, including sites nobody has heard of yet. In the video, this is done with Website Filter Pro, a small free tool built for exactly this — it has a Block mode for named sites and an Allow mode where only your selected websites open. This guide covers the complete method: planning the list, setting the tool up, and testing it the way a user (and a bypass-artist) would.
What a user sees on an allowlist PC
Opening: youtube.com
⛔ This website is blocked. Only approved websites are allowed on this PC.
Opening: gst.gov.in
✔ Allowed — site loads normally
How allow mode behaves: named sites load, everything else stops with a clear message. Wording is illustrative; the rule is the point.
1
Decide the List Before You Touch the Tool
An allowlist is only as good as the list. Five minutes of planning now prevents the most common allowlist failure — a forgotten work site and an angry phone call an hour later.
Sit at the PC and write down every site the work actually needs: the software portal, the bank, the mail site, the government site, the supplier page
Add the login and support domains those sites quietly use — many sites sign you in through a second domain (covered in detail in our hidden domains guide)
Keep the list short and defensible: every extra site is a door you chose to open
Get the list approved by whoever owns the desk — an allowlist you invent alone becomes an argument later
2
Install Website Filter Pro From the Video Description
The tool in the video is Website Filter Pro, a custom website filter for Windows 10 and 11. It is distributed free through the video — get it from the link in the video description, not from a random download site.
Download the tool from the link given in the YouTube video description (on Facebook or Instagram, the video explains how to request it in the comments)
Install or extract it while signed in as the administrator account
Open the tool and confirm it shows both modes: block selected websites and allow only selected websites
Do not download look-alike copies from file-sharing sites — website blockers are a classic disguise for adware
3
Switch to Allow Mode and Add Your Sites
This is the heart of the setup. In Allow mode the logic inverts: the list is no longer what is forbidden, it is the only thing permitted.
Select the allow only selected websites (whitelist) mode in the tool
Add each approved site one per line, exactly as approved in step 1 — include the main domain of each service
Apply and save the settings, then restart the browser so no old session survives
Open two or three allowed sites and confirm they load fully, including login
4
Test It as a Standard User, Not as Admin
Filters are always tested wrong — from the admin account that installed them, where everything looks fine. The real test happens in the account people actually use.
Sign in with the standard user account the desk normally uses
Open an allowed site — it must load completely, with login working
Open a popular site that is not on the list — it must be refused
Try a site nobody mentioned, like a random news page — allow mode should refuse it too, because unlisted means blocked
If an allowed site half-loads, you have a hidden domain missing — see the hidden domains guide before adding random guesses
5
Protect the Settings So the Filter Stays On
A filter that any user can open and switch off is a suggestion, not a control. Protecting it is not about distrust — it is about the setting surviving curiosity and accidents.
Make sure daily users work from standard accounts; only the admin account can change or remove the filter
Keep the admin password with the owner or IT person only — an allowlist PC where everyone knows the admin password is not locked at all
Re-check the list after Windows updates and browser changes — verify the block page still appears for an unlisted site
Keep a written copy of the approved list so a rebuilt PC can be re-locked in minutes
🔴 Honest limits, stated plainly: a PC filter controls this PC, through its browsers. It does not control the same person's phone on mobile data, and a determined user with admin rights or a bootable USB is outside what any software filter promises. Allowlisting is for making the right thing easy and the wrong thing inconvenient — pair it with standard user accounts and it holds up well in real offices.
🎥 Watch the Full Video Guide
The complete Website Filter Pro walkthrough — download, allow mode and testing — is shown live in the video.
What is the difference between allow mode and block mode?
Block mode refuses the sites you name and allows everything else — good for stopping a few known distractions. Allow mode refuses everything except the sites you name — the right choice when a PC has a fixed job, like billing or exams, and needs only a handful of websites.
Can I allow only selected websites without buying a firewall?
Yes. Organisations do this with hardware firewalls or paid security suites, but for a single PC or a small office the free Website Filter Pro tool shown in the video does the same job in allow mode: add the approved sites, and everything else is blocked.
An allowed website opens but its login fails. Why?
Many sites run their login on a second domain, or load parts from a CDN domain. The main site is allowed but its helpers are not, so the page half-loads or the sign-in breaks. The fix is to find and add those hidden domains — guessing random domains usually makes the list messy instead.
This guide is based on the Technical Anshu video on allowing only selected websites • Stuck on a step? Ask in the video comments — answers happen there 🙏