How to Implement Virtual Private Network (VPN) Split Tunneling on Your VPS

Setting up VPN Split Tunneling on your Virtual Private Server (VPS) involves a few steps. Here, I'll provide a general guide to help you get started. Keep in mind that specific instructions may vary depending on the VPN software you're using.

1. Access Your VPS:
   • Connect to your VPS using SSH or any other method provided by your VPS provider.
2. Install and Configure VPN:
   • Install the VPN server software of your choice on your VPS. Popular options include OpenVPN, WireGuard, and IPsec.
3. Set Up Split Tunneling:
   • OpenVPN:
     • Edit the OpenVPN server configuration file (usually located at /etc/openvpn/server.conf).
     • Add the following line to allow client-specific configurations:arduinoCopy codeclient-config-dir ccd
       
     • Create a directory for client-specific configurations:bashCopy codemkdir /etc/openvpn/ccd
       
     • For each client, create a file in the ccd directory with the client's name (e.g., client1 for a client named client1).
     • In each client's configuration file, add:perlCopy codepush "route x.x.x.x y.y.y.y"
       Replace x.x.x.x with the subnet you want to tunnel through the VPN and y.y.y.y with the subnet mask.
   • WireGuard:
     • Edit the WireGuard configuration file (usually located at /etc/wireguard/wg0.conf).
     • Add the allowed IPs for each peer. Only traffic to these IPs will be routed through the VPN.makefileCopy code[Peer]
       PublicKey = <Client_Public_Key>
       AllowedIPs = x.x.x.x/yy
       Replace <Client_Public_Key> with the actual public key of the client, and x.x.x.x/yy with the subnet you want to route through the VPN.
   • IPsec:
     • Modify your IPsec configuration to include specific traffic selectors for each client. This involves adjusting your IPsec policy and tunnel configuration.
4. Restart the VPN Server:
   • After making changes, restart the VPN server to apply the new configurations.
5. Client Configuration:
   • On each client device, adjust the VPN client settings to allow split tunneling. This usually involves specifying which traffic should go through the VPN and which should not.
6. Testing:
   • Connect to your VPN from a client and verify that the split tunneling is working as expected. You can do this by accessing resources on both sides of the VPN (those that should be tunneled and those that shouldn't).

Remember that implementing split tunneling might have security implications, so make sure you thoroughly understand the implications of your configuration. Always follow best practices for securing your VPS and VPN setup.