I must be missing something, trying to get vpn running on a client-Lan.  Was able to get PPTP running on a laptop.  L2TP will connect according to the system logs but connection fails.

ER605 setup 

WAN: WAN
Authentication Type: Local
IPsec Encryption: Encrypted
Pre-shared Key: -------- (1-128 characters)
Status: Enable

PC setup
Connection name   home1
server name or address  XXXXXXX.ddns.net
Type of sign-in info  Username and password
Username   user
password  ******************
 

System log ER605

ID    Time    Module    Level    Content
1    2023-12-15 14:18:42    IPsec    NOTICE    WAN: Phase 2 of IKE negotiation succeeded. (Peers=173.180.203.XXX<->192.168.2.16)
2    2023-12-15 14:18:42    IPsec    NOTICE    WAN: Phase 1 of IKE negotiation succeeded. (Peers=173.180.203.XXX<->192.168.2.16)
3    2023-12-15 14:18:41    IPsec    NOTICE    WAN: IKE negotiation began in responder mode. (Mode=Main Mode, Peers=173.180.203.117<->192.168.2.16)
 

Error from pc

The remote connection was not made because the attempted VPN Tunnel failed........................

When I attempt to use IKEV2 there are no entries in the log file.