A Virtual Private Network (VPN) is a connection between two endpoints - a VPN router, for instance – in different networks that allows private data to be sent securely over a shared or public network such as the internet.
To successfully configure the VPN tunnel, the settings needed must be properly set up and the remote router must also be working. To know how to check the settings, follow the steps below:
NOTE: The local IP address of the Linksys router must have a different LAN IP segment than that of the remote router to avoid conflict with the VPN connection.
Access the router’s web-based setup page. For instructions, click here.
When the router’s web-based setup page opens, click the Security tab > VPN sub-tab.
NOTE: In this example, the images from Linksys BEFSX41 and BEFVP41 version 2 are used. The screenshot below may not be the same for the newer versions of Linksys routers because it only supports VPN Passthrough.
Verify the following settings:
Local Secure Group – must be the same as the local router’s LAN segment.
Remote Secure Group – must be the same as the remote router’s LAN segment.
Remote Security Gateway – must be the WAN/Internet IP address of the remote router.
Encryption and Authentication – must be the same as that of the remote router.
Pre-shared Key and Key Lifetime – must be the same as that of the remote router.
You have now checked your VPN settings and you may try connecting to your VPN again.