Accessing remote local network devices via a VPN on Windows 11 requires configuring split tunneling or ensuring the remote subnet is included in the VPN’s routing table. This guide details how to establish secure SSH and VNC connections by verifying network paths, adjusting adapter settings, and troubleshooting common resolution failures that prevent visibility of internal resources.
Understanding VPN Routing for Local Resources
When you connect to a corporate or remote network using a Virtual Private Network (VPN), your computer routes traffic through that tunnel. By default, many VPN clients use split tunneling, meaning only specific traffic goes through the VPN while the rest uses your local internet connection. If your remote device resides on a subnet not explicitly routed through the VPN client, Windows will attempt to reach it via your local router, resulting in a connection timeout.
To fix this, you must ensure that the remote LAN subnet is added to the VPN connection’s route table. In most standard Windows VPN configurations, this happens automatically if the administrator has configured the server to push routes. However, if you are connecting to a home lab or a custom setup, you may need to manually verify that the remote IP range is accessible. Check your VPN client settings for an option labeled "Use default gateway on remote network" or similar. Enabling this forces all traffic through the tunnel, which often resolves visibility issues but can slow down general internet browsing because local web requests now travel through the remote server.
Configuring Network Adapter Settings
Windows 11 manages multiple network interfaces simultaneously: your physical Ethernet or Wi-Fi adapter and the virtual adapter created by the VPN software. Conflicts between these adapters can cause connectivity problems. You need to ensure that the VPN adapter is prioritized correctly for the remote subnets.
- Open Network Connections: Press
Win + R, typencpa.cpl, and hit Enter. - Identify Adapters: Locate your primary internet adapter (e.g., Wi-Fi) and the new VPN adapter.
- Adjust Interface Metrics: Right-click the VPN adapter, select Properties, then double-click Internet Protocol Version 4 (TCP/IPv4). Click Advanced and note the Interface Metric. A lower number means higher priority. Ensure the VPN adapter does not have an unnecessarily high metric if you want local traffic to bypass it, or a low metric if you want strict tunneling.
If you are experiencing intermittent drops, consider disabling Link-Local Addressing on the VPN adapter temporarily to see if it resolves ARP conflicts. This is a diagnostic step rather than a permanent fix, as link-local addresses are used for local subnet communication.
Troubleshooting DNS Resolution Issues
One of the most common reasons you cannot connect to a remote device by hostname is DNS failure. When connected via VPN, your machine should receive DNS servers from the remote network. If it falls back to your local ISP’s DNS, it will not know how to resolve internal hostnames like ubuntu-lab.local.
To diagnose this, open Command Prompt and run ipconfig /all. Look for the section corresponding to your VPN adapter. Verify that the DNS Servers listed match the remote network’s infrastructure. If they are blank or show your local router’s IP, the VPN is not pushing DNS configuration correctly.
In such cases, you can manually specify DNS servers in the IPv4 properties of the VPN adapter, provided you know the correct internal DNS IPs. Alternatively, you can use the remote device’s IP address directly for initial testing. If the IP works but the hostname does not, the issue is strictly DNS-related. For more detailed guidance on resolving these specific lookup failures, refer to our article on Windows 11 DNS Resolution Not Working with Any VPN Service.
Establishing Secure Connections
Once the network path is confirmed, you can initiate connections using standard protocols. For Linux-based remote devices, such as Ubuntu, SSH is the most reliable method. Open PowerShell or Command Prompt and type ssh username@remote_ip_address. If the connection hangs, check your firewall rules on both the Windows host and the remote device to ensure port 22 is open and not blocked by intermediate security groups.
For graphical access, VNC is a common choice. However, unlike SSH, VNC transmits data in cleartext by default unless tunneled. It is strongly recommended to tunnel VNC over SSH for security. On the remote machine, configure the VNC server to listen on localhost only, then create an SSH tunnel from Windows using ssh -L 5900:localhost:5900 username@remote_ip. Then, point your VNC client to localhost:5900. This ensures that even if the VPN connection drops, the graphical session data remains encrypted within the SSH channel until reconnection.
If you encounter issues where the VPN connects but you cannot ping other computers on the same remote network, check for isolation policies. Some enterprise VPNs implement client isolation or AP isolation at the gateway level, preventing devices connected via VPN from communicating with each other. In these scenarios, you cannot simply adjust Windows settings; the restriction is enforced by the remote network administrator.
Verifying Connectivity and Security
After establishing the connection, perform basic verification steps. Use ping to test latency and packet loss. Use tracert to ensure packets are traversing the VPN tunnel and not leaking to the public internet. Finally, always verify that your VPN client is authenticated and that no unauthorized sessions are active. Regularly updating your Windows 11 network drivers ensures compatibility with newer VPN protocols like IKEv2, which offer better performance and stability than older L2TP or PPTP connections.
Frequently Asked Questions
Why can I ping the VPN gateway but not other devices?
This usually indicates that the remote subnet routes are missing from your VPN client. Ensure that the VPN profile includes the specific IP ranges of the devices you wish to reach. If using a third-party client, check for a "Custom Routes" or "Include these networks" setting.
Does enabling "Use default gateway on remote network" break my internet?
No, it does not break your internet, but it may slow it down. All your web traffic will be routed through the remote server. If the remote server has a slower connection or higher latency, your general browsing experience will suffer significantly.
How do I fix hostname resolution when the IP works?
The issue is likely DNS. Configure your VPN adapter to use the remote network’s DNS servers manually in the IPv4 properties. Alternatively, add entries to your local hosts file if the remote device has a static IP.
Is VNC safe to use over a VPN without encryption?
VNC itself is often unencrypted. While the VPN encrypts the transport layer, relying solely on the VPN for VNC security is acceptable if the VPN is robust. However, tunneling VNC over SSH provides an additional layer of security and is considered best practice for sensitive environments.
What if my VPN client doesn't allow custom routes?
If your client lacks advanced routing options, you may need to switch to a more flexible client like OpenVPN Connect or WireGuard. These tools allow granular control over which traffic is sent through the tunnel, solving visibility issues for local network devices.