/interface list
add name=wan comment=wan

/interface list member
add list=wan interface=ether1
add list=wan interface=ether2

/ip firewall address-list
add address=10.0.0.0/8 list=private
add address=100.64.0.0/10 list=private
add address=192.168.0.0/16 list=private
add address=172.16.0.0/12 list=private
add address=192.168.88.0/24 list=lan

/ip firewall filter
add chain=input connection-state=invalid action=drop
add chain=forward connection-state=invalid action=drop
add chain=forward connection-state=established,related connection-mark=no-mark action=fasttrack-connection
add chain=forward connection-state=established,related connection-mark=no-mark action=accept 
add chain=output connection-state=invalid action=drop 

/ip firewall nat
add chain=srcnat src-address-list=private dst-address=!private out-interface-list=wan action=masquerade

/ip firewall mangle
add chain=prerouting in-interface=ether1 connection-mark=no-mark new-connection-mark=mark-connection-ether1 action=mark-connection passthrough=yes
add chain=prerouting in-interface=ether2 connection-mark=no-mark new-connection-mark=mark-connection-ether2 action=mark-connection passthrough=yes

add chain=prerouting connection-mark=no-mark new-connection-mark=mark-connection-ether1 passthrough=yes src-address-list=force-ether1 action=mark-connection
add chain=prerouting connection-mark=no-mark dst-address-list=force-ether1 new-connection-mark=mark-connection-ether1 passthrough=yes action=mark-connection
add chain=prerouting connection-mark=no-mark new-connection-mark=mark-connection-ether2 passthrough=yes src-address-list=force-ether2 action=mark-connection
add chain=prerouting connection-mark=no-mark dst-address-list=force-ether2 new-connection-mark=mark-connection-ether2 passthrough=yes action=mark-connection

add chain=prerouting comment=PCC connection-mark=no-mark src-address-list=private dst-address-list=!private dst-address-type=!local in-interface-list=lan new-connection-mark=mark-connection-ether1 passthrough=yes per-connection-classifier=src-address:2/0 src-address-list=lan action=mark-connection
add chain=prerouting comment=PCC connection-mark=no-mark src-address-list=private dst-address-list=!private dst-address-type=!local in-interface-list=lan new-connection-mark=mark-connection-ether2 passthrough=yes per-connection-classifier=src-address:2/1 src-address-list=lan action=mark-connection

add chain=prerouting connection-mark=mark-connection-ether1 in-interface-list=lan new-routing-mark=mark-routing-ether1 passthrough=yes action=mark-routing
add chain=prerouting connection-mark=mark-connection-ether2 in-interface-list=lan new-routing-mark=mark-routing-ether2 passthrough=yes action=mark-routing

add chain=output connection-mark=mark-connection-ether1 new-routing-mark=mark-routing-ether1 action=mark-routing passthrough=yes
add chain=output connection-mark=mark-connection-ether2 new-routing-mark=mark-routing-ether2 action=mark-routing passthrough=yes

/ip firewall raw
add chain=prerouting in-interface-list=!wan protocol=tcp action=drop dst-port=25
add chain=prerouting in-interface-list=wan protocol=udp action=drop dst-port=1-1024,3389
add chain=prerouting in-interface-list=wan protocol=tcp action=drop dst-port=1-1024,1900,2049,3389,5353