How to block visitors to website if they are using vpn/proxies?

Hello folks

I am curious how can i block certain visitors to my website if they are using vpn or proxies to hide their's IP.
I check some websites through VPN and when i want to open site then i see only blank screen(i need that)

So, i need some Javascript code,hml or whatever is a thing, which i can upload to my server example in Cpanel and to users who using vpn just see white screen or some message.

Please just do not provide some paying solutions here. I hope so that some developer can share free Javascript code here about this issue.

Thanks in advance

 

You can block various ports often used by VPN's. And you can also use geolocation tracking to block access to your site from certain regions where VPN's are commonly used.

 

Blocking visitors to your website who are using VPNs or proxies is a complex task, and it's important to understand that no method is 100% foolproof. VPN and proxy services are constantly evolving to bypass detection. However, there are several strategies and techniques you can employ to make it more difficult for such users to access your site.

Here's a breakdown of common methods:

1. IP-Based Detection and Blacklisting:

• Known Proxy/VPN IP Databases: The most common approach. There are commercial services (like MaxMind, IPQualityScore, Abstract API, IPinfo.io) that maintain vast, regularly updated databases of IP addresses known to belong to VPNs, proxies, Tor exit nodes, and data centers often used for anonymity. You can integrate their APIs into your website's backend to check incoming IP addresses against these lists. If an IP matches, you can block or challenge the user.
  
  • Pros: Relatively easy to implement using third-party services.
    
    
  • Cons: Databases need constant updating. New VPN/proxy IPs emerge frequently, and some legitimate users might use datacenter IPs (e.g., cloud hosting for personal projects) that could be mistakenly flagged. Residential proxies are particularly hard to detect with this method.
    
• Manual Blacklisting: If you notice a specific IP or range frequently being used by unwanted VPN/proxy traffic, you can manually block it at your web server or firewall level.
  
  • Pros: Direct control.
    
    
  • Cons: Not scalable, requires constant monitoring, and VPNs/proxies can easily switch IPs.
    

2. HTTP Header Analysis:

• X-Forwarded-For, Via, Forwarded Headers: Proxy servers often add or modify HTTP headers like X-Forwarded-For, Via, or Forwarded to indicate the original client's IP address. While these can be spoofed or removed by highly anonymous proxies, their presence can be a strong indicator of proxy usage.
  
  
• User-Agent Anomalies: Discrepancies or unusual patterns in the User-Agent string (which identifies the user's browser and operating system) might suggest proxy use or a bot.
  
  
• Request Fingerprinting: Analyzing a combination of HTTP headers, protocols, and other request characteristics to match against known patterns associated with anonymization services.
  

 

Hello

Thanks for answer

Now i have found a solution how to block proxies in htacces file.
But when i put that code i see blank screen.
Where to put in htaccess in which part of the file?
Thanks