How to block a program from accessing the internet

There are many reasons to block a specific app or software from accessing the internet. Here are the most common ones:

• Prevent software from auto-updating or downloading data in the background
• Reduce distractions from games or messaging apps
• Protect your privacy by limiting data sent to external servers
• Control what apps your child can use online

Let's start with how to block internet access for a program on Windows.

Windows offers a built-in way to control how each program connects to the internet using the Windows Defender Firewall. This is one of the most reliable methods to block a program from accessing the internet-without needing to install any third-party software.

Here's a step-by-step guide to block internet access for any app using outbound firewall rules:

• Step 1: Open Windows Defender Firewall
  Go to Control Panel System and Security Windows Defender Firewall, then click on "Advanced Settings" in the left panel.
• Step 2: Create a New Outbound Rule
  Under "Outbound Rules," click on "New Rule" on the right-hand side. Select "Program" and proceed.
• Step 3: Choose the App to Block
  Select "This program path" and browse to the .exe file of the application you want to block-like `chrome.exe` or `zoom.exe`.
• Step 4: Block the Connection
  Select "Block the connection," then click "Next." Apply this rule to all profiles (Domain, Private, Public) and give your rule a recognizable name (e.g., "Block Chrome Internet Access").

Once completed, that program will no longer be able to connect to the internet-while all other apps remain unaffected. This method is highly effective for stopping auto-updates, syncing, or unwanted data transmission.

To reverse it later, simply disable or delete the outbound rule.

Unlike Windows, macOS doesn't offer a built-in way to block internet access for individual apps. However, with the help of third-party firewall applications, Mac users can still fully control which programs connect to the web.

Popular tools like Little Snitch and Radio Silence give you detailed control over outgoing network connections. These apps allow you to create rules to block internet access per application or process-ideal for both parental control and bandwidth management.

Here's how to block internet access using Radio Silence:

• Step 1: Download and install Radio Silence from the official website.
• Step 2: Launch the app and click "Block Applications."
• Step 3: Add the .app file of the program you want to block (e.g., Safari, Chrome, Zoom).
• Step 4: The app is now prevented from making any outbound internet connection.

This method is simple, silent, and doesn't interrupt system performance. It's perfect if you want to enforce productivity or block programs from syncing data in the background.

If you want to block internet access beyond a single device-or across a shared home or school network-your router or third-party network management tools can help. These methods offer centralized control and often work regardless of the user's operating system.

Option 1: Use Your Router's Admin Settings
Modern routers often include parental control or traffic filtering features. You can log in to the router's dashboard and block specific devices, ports, or IP addresses used by apps. This works especially well to block streaming, gaming, or messaging apps on a schedule.

Option 2: Use Bandwidth Control Tools like NetLimiter (Windows)
NetLimiter lets you control how much data each app can send or receive. You can create rules to restrict apps to 0 KB/s, effectively cutting off their internet access without uninstalling them.

Option 3: Monitor and block via GlassWire
GlassWire visualizes real-time app connections, helping you spot suspicious activity or unexpected background usage. You can then block these apps directly from the interface.

These advanced methods are great for tech-savvy users and parents who want to enforce system-wide internet limitations without constant manual changes.

If you're looking for a smarter, easier way to block internet access for specific apps-especially on your child's device-FamiSafe is a powerful all-in-one solution designed for digital parenting.

FamiSafe allows you to control app behavior and web access across Android, iOS, Kindle Fire, and more-without complex firewall settings or router hacks.

Here's what you can do with FamiSafe:

• App Blocker: Instantly block apps like WhatsApp, YouTube, Discord
• Web Filter: Block over 10 categories of websites and custom URLs
• Screen Time Limits: Set daily usage schedules to limit access
• Real-Time Alerts: Get notified of risky behavior
• Multi-Device Management: Set rules per device or child

Compared to system firewalls or manual router settings, FamiSafe is designed for families-it's remote, intuitive, and flexible. Everything can be managed from your own phone.

Can I block internet access for one app only?
Yes. On Windows, you can use the built-in Firewall to block internet access for a specific .exe file. On Mac, tools like Little Snitch or Radio Silence allow you to isolate apps from the internet.

How do I restrict access to the internet?
You can restrict access by setting up a firewall rule, adjusting router-level controls, or using a parental control tool like FamiSafe. FamiSafe also allows screen time limits and app blocking for full control over internet access.

How do I block access to internet for a background service?
You'll need to identify the exact executable (.exe) or system process and block it through firewall rules. On Windows, use the Advanced Firewall panel; on Mac, use third-party firewall apps.

How do I block a plugin from the internet?
If the plugin runs within a host app (like a browser or design software), you'll need to block the host app entirely or use outbound rules targeting the plugin's connection behavior. For browsers, you can also disable plugin permissions manually.

Whether you're a parent, a professional, or simply someone who values digital control, knowing how to block a program from accessing the internet gives you powerful tools to manage your devices more securely and efficiently.

From Windows Firewall rules to Mac firewall apps and network-level restrictions, there are solutions for every technical level and need. But if you're looking for a smarter, parent-friendly way to manage app access and internet safety-especially for kids - FamiSafe offers a comprehensive solution that goes beyond simple blocking.

Start building a safer digital environment today with the right tools in your hands.

Thomas Jones

chief Editor