User Manual

In Keenetic routers, it is possible to set up an L2TP over IPSec VPN server (L2TP/IPSec) to access home network resources.

In such a tunnel, you can absolutely not worry about the confidentiality of IP telephony or video surveillance streams. L2TP/IPSec provides completely secure access to your home network from a smartphone, tablet or computer with minimal configuration: Android, iOS and Windows have a convenient built-in client for this type of VPN. In addition, many Keenetic models offer hardware acceleration of data transfer over L2TP over IPsec.

To set up the server, it is necessary to install the system component 'L2TP/IPsec VPN server'. You can do it on the 'General system settings' page in the 'Updates and component options' section by clicking on the 'Component options'.

Then go to the 'Applications' page. Here you will see the 'L2TP/IPsec VPN server' panel. Click the 'L2TP/IPsec VPN server' link.

In the 'L2TP/IPsec VPN server' window that appears, specify the security key in the 'Shared IPsec key' field. This security key will need to be specified on the client when configuring the VPN connection.

The 'Multiple sign-in' parameter controls the ability to establish several simultaneous connections to the server using the same credentials. This is not a recommended scenario due to the lower security level and the disadvantages in monitoring. However, during the initial configuration, or in cases where you want to allow the installation of a tunnel from multiple devices of the same user, you can leave the option enabled.

By default, the 'NAT for clients' option is enabled in the server configuration. This setting is used to allow VPN server clients to access the Internet. In a built-in Windows client, this feature is enabled by default, and when a tunnel is established, requests to the Internet will be sent through it.

In server settings in the 'Network access' field, you can also specify a segment different from the Home segment, if necessary. In this case, the network of the specified segment will be available through the tunnel.

The total number of possible simultaneous connections depends on the IP address pool size setting. As with the starting IP address, it is not recommended to change this setting unnecessarily.

In the 'Users' section, select the users you want to allow access to the L2TP/IPsec server and the local network. Here you can also add a new user by specifying a username and password.

After configuring the server, set the switch to the 'Enabled' state.

By clicking on the 'Connection statistics' link, you can see the connection status and additional information about active sessions.

If you want to provide clients with access not only to the local network of the VPN server but also in the opposite direction, i.e. from the network of the VPN server to the remote network of the VPN client, to provide data exchange between the two sides of the VPN-tunnel, refer to the Routing networks through VPN instruction.