A VPN, or virtual private network, is a secure tunnel between your device and the internet. But they can be used to bypass geo-restrictions and make it appear as if you’re in a different country. In this article, we’ll show you how to block a VPN on your router.
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Introduction
A Virtual Private Network (VPN) is a great way to add security to your internet connection. But what if you want to block a VPN? Whether you’re trying to stop your ISP from tracking your online activity or prevent a malicious actor from accessing your network, there are a few ways to block VPN traffic.
One popular method is to use a VPN kill switch. A kill switch is a setting that will automatically disconnect you from the internet if your VPN connection drops. This ensures that your traffic is always protected, even if your VPN connection is interrupted.
Another method for blocking VPN traffic is to configure your router to do so. By using firewall rules or access control lists, you can block traffic from specific IP addresses or ranges of IP addresses. This can be effective for blocking all traffic from a particular VPN server or for blocking traffic from multiple VPN servers.
Finally, some software applications and anti-virus programs have the ability to detect and block VPN traffic. If you’re using one of these programs and you want to allowVPN traffic, you’ll need to configure the program accordingly.
What is a VPN?
A VPN, or Virtual Private Network, is a service that allows you to connect to the internet using a server that is not your own. This allows you to bypass restrictions that are placed on your internet connection by your ISP, and it also allows you to browse the internet with a degree of anonymity.
However, because VPNs can be used to bypass restrictions placed on your internet connection, they can also be used for nefarious purposes. If you suspect that someone on your network is using a VPN, you may want to block them from doing so.
How to block a VPN on your router
If you want to block a VPN on your router, there are a few different methods you can use. You can block the VPN’s IP address, block the VPN’s DNS server, or block the VPN’s traffic. We’ll show you how to do all three.
Option 1: Block VPN Traffic by IP Address
If you know the IP addresses of the VPN servers you want to block, you can simply enter them into your router’s blacklist. This will prevent any traffic from those IPs from entering your network.
To do this, log into your router’s interface and look for a section called “Blacklist” or “IP Filters”. Enter the IP addresses of the VPN servers you want to block, one per line. Usually, you can just enter the first two sets of numbers in the address (known as an octet), followed by a wildcard character (*), which will block all addresses that start with those numbers.
For example, if you wanted to block all traffic from the IP address 123.456.789.100, you would enter 123.456.789.* into the blacklist. This would block traffic from any IP that starts with 123.456.789, including 123.456.789.1, 123.456.789.2, and so on.
Option 2: Block VPN Traffic by Port
If you have a little more router knowledge, you can also block VPN traffic by port. To do so, you’ll need to know which ports your VPN uses. The most common ones are 1723 (PPTP) and 500 (IKEv2), but your VPN might use a different one. You can usually find this information in your VPN’s documentation or by contacting customer support.
Once you know which port your VPN uses, open your router’s configuration page and look for Port Forwarding or Virtual Servers. From there, you should be able to add a new rule that blocks incoming traffic on that port.
##Option 3: Block DNS Traffic for Your VPN Provider
Another way to block VPN traffic is by blocking DNS requests to your ISP’s DNS servers for the domains owned by your VPN provider. For example, if you use NordVPN, you could block all DNS requests to NordVPN’s servers (which have domains like nordvpn.com and nordvpn.net).
To do this, you’ll need to find out the IP addresses of your ISP’s DNS servers and then add them as Custom DNS entries in your router’s configuration page. You can usually find this information in your ISP’s documentation or by contacting customer support.
Once you have the IP addresses of your ISP’s DNS servers, login to your router’s configuration page and look for DHCP or DNS Settings. From there, you should be able to add the IP addresses of your ISP’s DNS servers as Custom DNS entries.
Option 3: Block VPN Traffic with a Firewall
If you have a firewall, you can set it up to block VPN traffic. This is usually the best option if you have a router that doesn’t support VPNs. All you need to do is set up traffic rules that block all traffic from the IP addresses of the VPN servers.
To do this, you’ll need to know the IP addresses of the VPN servers you want to block. You can usually find this information on the website of your VPN provider. Once you have the IP addresses, setting up the firewall is a relatively simple process.
If you want to block all traffic from a specific country, you can use a service like IP2Location to get a list of all IP addresses in that country.
Conclusion
Now that you know how to block a VPN on your router, you can keep your online activities private and avoid unwanted snooping. Whether you’re trying to protect your family from online threats or prevent your employees from accessing certain websites, this guide will show you how to get the job done.