关于VPN连接下本地设备借助自有服务器专属IP访问目标服务器的可行性咨询

Hey there! Great question—let’s break this down clearly for you.

The short answer is: It depends on how your VPN is configured, but in the most common scenario (full-tunnel VPN), yes, your computer X will use your "own" server’s dedicated IP to communicate with server Y.

Here’s the detailed breakdown:

• Full-tunnel VPN mode: If your VPN is set to route all of your computer X’s internet traffic through your "own" server, then every request you send (including to server Y) will originate from your server’s dedicated IP. This is exactly what you want—server Y’s firewall will see the allowed dedicated IP and let the connection through.
• Split-tunnel VPN mode: Some VPNs are configured to only route specific traffic (like work-related sites or internal networks) through the VPN, while other traffic uses your computer X’s regular local IP. If server Y isn’t included in the list of traffic that goes through the VPN, your connection to Y will still use X’s original IP, which will get blocked by the firewall.

To confirm this works as expected, you can do a quick test:

1. Connect your computer X to your "own" server’s VPN.
2. Run a command like curl ifconfig.me (on Linux/macOS) or visit a "what’s my IP" site in your browser. The IP shown should be your "own" server’s dedicated IP if full-tunnel is enabled.
3. Try connecting to server Y—if the IP matches, the connection should go through successfully.

If it’s not working, double-check your VPN settings to make sure either full-tunnel is enabled, or server Y’s address is added to the split-tunnel’s "route through VPN" list.

备注：内容来源于stack exchange，提问作者DonMiguelSanchez