NetScreen 50, transparent mode, tagged vlans and webui?

Hello there!

I actually have a network composed of a Cisco 2800 router, attached to a switch.
They communicate through three 802.1q tagged VLANs (workstations, production, management).

I would like to put the NS50 between the router and the switch.

It is set to transparent mode, so the VLAN tagging stays.
All VLANs are working properly, but I can't reach the NS50 WebUI..

An IP is set for vlan1 interface, but it is unreachable..

Any ideas how I could access the WebUI through my management VLAN (tagged 30) on my NS50 set to transparent mode?


Thanks in advance for your replies and your help!