Skenario:
VPN clients(192.168.90.2-10) — eth1(public ip):mikrotik:eth2(LAN 192.168.99.1) — LAN Clients (192.168.99.x/24)
System:
-Mikrotik RB750 RouterOS v5.20
I. Create pool ip address for VPN clients ip address
Example create pool for 9 VPN clients with ip address 192.168.90.2-192.168.90.10
/ip pool
add name=vpn-pool ranges=192.168.90.2-192.168.90.10