What I want to do is access the Powerbox Pro from ethernet1 untagged and get all untagged Traffic from Port 2,3,4 tagged with VLAN3 on port1.
The Box could be accessed from port1 but Traffic from Port2,3,4 is not forwarded to Port1 at all.
# jul/19/2018 11:12:19 by RouterOS 6.42.6
# software id = MGUA-0S1T
#
# model = 960PGS
# serial number = XXXXXX
/interface bridge
add fast-forward=no name=bridge1
/interface vlan
add interface=bridge1 name=VLAN1 vlan-id=1
/interface ethernet switch port
set 0 default-vlan-id=1 vlan-mode=secure
set 1 default-vlan-id=3 vlan-mode=secure
set 2 default-vlan-id=3 vlan-mode=secure
set 3 default-vlan-id=3 vlan-mode=secure
set 5 default-vlan-id=1
/interface bridge port
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
add bridge=bridge1 disabled=yes interface=ether5
add bridge=bridge1 disabled=yes interface=sfp1
/ip firewall connection tracking
set enabled=no
/interface ethernet switch vlan
add independent-learning=no ports=ether1,ether2,ether3,ether4 switch=switch1 vlan-id=3
add independent-learning=no ports=ether1,switch1-cpu switch=switch1 vlan-id=1
/ip firewall filter
add action=drop chain=input disabled=yes log=yes