How to Detect VPN Connections

When a person connects to the Internet using a VPN, their traffic is routed through that provider’s servers. As a result, if someone checks their public IP address, they’ll likely see that it changes frequently. This makes it easy to detect VPN connections.

Hetect VPN IP connection  itself is encrypted, and the user’s real IP address remains hidden. So how do you know if someone is using a VPN? The good news is that there are a variety of tools and tests to find out.

For example, many websites use a technique called packet sniffing to identify users who are connected to a VPN. They do this by looking at the contents of data packets to see if there are any signs that the connection is secure, such as a TLS handshake.

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Another method involves looking at the DNS lookup results of a person’s IP address to determine which domain name servers they use. If the DNS server list is different from the person’s geographic location, this indicates that they are using a VPN.

Additionally, some ISPs and other providers use Deep Packet Inspection to detect VPN connections. This is an advanced form of network analysis that can help identify VPN users, but it requires expensive specialist software.

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