To configure LAN-to-LAN IPsec VPN on a TP-Link router, follow these steps:
Log in to the web management interface of the TP-Link router using a web browser.
Navigate to the VPN > IPsec menu.
Click the Add button to create a new IPsec VPN profile.
Configure the following settings for the new VPN profile:
Profile Name: Enter a name for the VPN profile.
Remote Gateway: Enter the IP address or hostname of the remote VPN router.
Local WAN IP: Select the WAN interface for the local router.
Remote WAN IP: Enter the public IP address of the remote VPN router.
Authentication Method: Select the authentication method for the VPN connection (Pre-Shared Key or Digital Certificate).
Pre-Shared Key: Enter the pre-shared key for the VPN connection.
IKE Proposal: Select the IKE proposal to use for the VPN connection.
IPsec Proposal: Select the IPsec proposal to use for the VPN connection.
Remote Subnet: Enter the remote LAN subnet.
Local Subnet: Enter the local LAN subnet.
Click the Save button to save the VPN profile.
Repeat steps 3-5 for each additional VPN connection.
Navigate to the VPN > IPSec > Connection Status menu to view the status of the VPN connections.
Note: The exact steps may vary depending on the model and firmware version of your TP-Link router. It is recommended to refer to the user manual or the TP-Link website for specific instructions for your router model. Also, it is important to ensure that the LAN subnets on both routers are not overlapping and that the firewall rules are properly configured to allow the VPN traffic.
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