Migrate Fortigate to Mikrotik - Firewall filteer between networks

Hi,

I would like to replace fortigate router to mikrotik. I have problem to setup firewall filter between networks.

Networks:
eth1_wan1
eth2_mgnt
eth3_servers
eth4_local1
eth5_local2

on fortigate router configuration looks like:

allow eth4_local1 → eth1_wan1 | nat
allow eth4_local1 → eth3_servers | destination-address:server_1 IP
allow eth4_local2 → eth1_wan1 | nat
allow eth1_wan1 → eth3_servers | service:3389 destination-address:server_1 IP source-address: client IP
block all

I would like setup it on mikrotik, block all all traffic then allow connection between subnets based on ports, addresses and services.

for example I would like to block all traffic and allow traffic from Server Network To Wan1 but it’s not working, traffic is blocked:

[admin@MikroTik] > /ip firewall filter print
Flags: X - disabled, I - invalid, D - dynamic 
 0 X  chain=forward action=accept in-interface=ether3_SRV 
      out-interface=ether1_WAN log=no log-prefix="" 

 1 X  chain=forward action=drop log=no log-prefix=""

could you give mi some basic configuration that will help me understand how it works on mikrotik. Thank You.