My Vpn Is Leaking Company Data When Split-Tunnelling Is Disabled

Network & Internet KB-1373

Summary

This guide helps you troubleshoot and resolve: My Vpn Is Leaking Company Data When Split-Tunnelling Is Disabled. Follow the steps below to fix the issue.

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Common Causes

If your VPN connection is active but you cannot access local devices such as network printers or shared drives, or if your internet traffic is not routing correctly when split-tunnelling is disabled, this guide will help you resolve the issue. Split-tunnelling allows you to choose which traffic travels through the encrypted VPN tunnel and which traffic uses your local internet connection directly.

Quick Fix Steps

Disconnect from the VPN and reconnect to refresh the routing table.
Restart your computer to clear any stuck network configurations.
Check that your local Wi-Fi or Ethernet connection is active before establishing the VPN tunnel.
Confirm that split-tunnelling is configured correctly in your VPN client settings.

Detailed Instructions

Configure Split-Tunnelling

When split-tunnelling is disabled, all traffic—including traffic for local devices—is forced through the company VPN. This can prevent you from accessing your home printer or local network shares. Follow these steps to adjust the setting:

Open your VPN client application.
Navigate to Settings or Preferences.
Locate the Network or Connection tab.
Find the Split Tunnelling option.
Enable split-tunnelling and add the local IP ranges you wish to bypass the VPN (for example, 192.168.1.0/24 for most home networks).
Save the changes and reconnect to the VPN.

Tip: If you are unsure of your local network range, check your computer's IP address. On Windows, open Command Prompt and run ipconfig. On macOS, open Terminal and run ifconfig.

Resolve Authentication Errors

If you receive an authentication error when attempting to connect to the company network, try the following:

Ensure your username and password are entered correctly, paying attention to capitalisation.
Verify that your multi-factor authentication (MFA) app is working and that you are approving the login request on your mobile device.
Check if your account password has recently expired and needs to be reset.
Confirm that your VPN client is updated to the latest version.

VPN Connection Failures

If the VPN will not connect at all, work through these checks:

Test your internet connection by visiting a website in your browser.
Restart your router or modem to refresh your public IP address.
Temporarily disable third-party firewalls or antivirus software to see if they are blocking the VPN port.
Ensure your system date and time are correct, as incorrect time settings can cause certificate errors.

Slow Internet Speeds Over VPN

When split-tunnelling is disabled, all your traffic routes through the company server, which can slow down your browsing. To improve performance:

Connect to a Wi-Fi network with a strong signal rather than relying on a weak connection.
Close unnecessary background applications that consume bandwidth.
Disconnect from the VPN when you do not need access to company resources.

Caution: Disabling split-tunnelling sends all your internet traffic through your organisation's network. This may affect your browsing speed and means your local network devices may become unreachable while the VPN is active.

If you host with us, you don't need to do this yourself — just Open a Ticket and our Brisbane team will get it sorted.

If you have followed these steps and are still experiencing VPN connectivity issues, contact our support team for further assistance.

Still Having Issues?

Need more help? If the issue persists after trying these steps, please open a support ticket and our team will assist you.

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