[Solved] Oneway Firewall Rule

RouterOS General
1

I have an easy Setup with 2 Vlans on a RB750 as Gateway.
Without any Firewall rules, both Vlans can see each other, but I would like to acces Vlan1 from Vlan2, but not to be able to access Vlan2 from Vlan1.

Now, setting the Firewall Rule

add chain=forward In.interface=Vlan1 Out.Interface=Vlan2 action=accept
add chain=forward In.interface=Vlan2 Out.Interface=Vlan1 action=drop

the Firewall blocks both directions.
What would be the correct rule to set, to allow only one way of communication?

2

You want probably to enable communication started by vlan1 … then you must accept in firewall vlan2->vlan1 established/related connection state rules before drop rule…

3

thank you,
do you might have an Example Code Line?

EDIT:
Ok, figured it out. Works like it should. Thanks again