If you want to enable IPSec encryption for your L2TP connections, follow these steps:
/interface l2tp-server server set enabled=yes ipsec-secret=Very$tr0ngPSK use-ipsec=yes default-profile=l2tp-profile mikrotik l2tp server setup full
/ip pool add name=l2tp-pool ranges=192.168.100.2-192.168.100.254 If you want to enable IPSec encryption for
/ip ipsec proposal add name=l2tp-proposal enc-algorithms=aes-256-cbc auth-algorithms=sha256 pfs-group=none lifetime=30m mikrotik l2tp server setup full