Hello,
I have vpn L2TP Server, in settings I use IPSec - required. The problem is that the client does not connect from any Windows.
In the log on Mikrotik writes error: L2TP connection rejected no IPsec encryption while it was required.
On the windows the client writes error: Cannot connect to the remote computer, so the connection port is closed.
On Mikrotik I have permission rules Firewall: Input udp 500,1701, 4500 and 50 (ipsec-esp).
When I change - use IPSec: yes. Connection is working.
Tell me what could be the reason?