I´m new in the Mikrotik world. I recently configure the PPP server, no problems whit PPTP, and L2TP/IPSEC between a Mikrotik and a remote client (windows XP machine) with statics IP in the client.

Then i try to configure the L2TP client behind nat with dynamic IP (ADSL line) but i can´t make it work (works fine with IPSEC disabled by changing the windows registry), i can´t make IPSEC works with an unknown remote peer. I also test directly conected to the router in the internet interface, but i can´t finsh the IPSEC part of the authentication wen the peer is unknown.

There is any way to make IPSEC work with dynamics IP peers?