I could not get a L2TP client to lan configuration to work on my ER605.  I took it out of service and put it in a test environment to troubleshoot it.  I have the following:

Local Area network IP range:  192.168.1.0/24

Windows 11 client IP address: 192.168.1.103

ER605 WAN Port Address: 192.168.1.108

ER605 LAN Port Address: 10.35.0.1

ER605 LAN IP range 10.35.0.0/24

Windows 11 client on the ER605 IP Address 10.35.0.101

Both Windows 11 clients can reach the internet.

I want to setup a L2TP/IPSEC tunnel such that the Windows client at 192.168.1.103 can RDP to the Windows client at 10.35.0.101.  I have configured the ER605 as follows:

VPN IP Pool:

L2TP VPN:

VPN User:

On the Windows 11 connecting client I have the L2PT client configured as follows:

I have tried every possible combination of authentication protocols in the following screen with no success:

Every time I try to connect I get an immediate error:  "The L2TP connection attempt failed because the security policy for the connection was not found".  In the Event Viewer I see the following error: "CoId={CBEE639E-5C4F-0003-EA3D-24CC4F5CDB01}: The user HOME\jheimann dialed a connection named Test which has failed. The error code returned on failure is 791."

I cannot get this to work.  What am I doing wrong?  Any help would be greatly appreciated.

Thanks,

Testing John