How to access bridged modem from LAN

I have a bridged optical modem that provides internet through a specific VLAN connected to vyos, say eth1.18 . VyOS handles the PPPoE. The management interface of the modem is on a static IP in the LAN subnet.

VyOS itself can ping the modem on the LAN side if I add a static route to the modem's IP, say 192.168.1.2 on the parent interface without the VLAN tag, eth1.

I was wondering how to provide access to the management interface for rest of the computers in my LAN? My thought was that I would need to maybe add firewall rules in forward filter and some kind of nat rule but I haven't been able to get it to work so far.

Any help would be greatly appreciated :)