Please need some help, coz i am learning new stuff

I am considering following shema eth3 and eth2 are servers in previous shema and must access all other interfaces

from wan interface, only eth2 and eth 3 must be accesable.

from eth4, interfaces eth2 and eth3 must be acessable, and from eth1 only internet

I already changed master port on eth3 for example, gave ip pool and dhcp server.
Computer gets right ip address but cannot exit to internet ( i am trying to create one interface for server for starters)

Please give suggestions

it seems no one can help me

Computer gets right ip address but cannot exit to internet ( i am trying to create one interface for server for starters)

Do you have masquerade rule configured on the router?
/ip firewall nat add action=masquerade out-interface=wan_

from eth4, interfaces eth2 and eth3 must be acessable, and from eth1 only internet
eth3 and eth2 are servers in previous shema and must access all other interfaces
from wan interface, only eth2 and eth 3 must be accesable.

Configure firewall, /ip firewall filter use in-interface and out-interface to control IP traffic between interfaces.