Tomato - OVPN Client - no access to Webif

Hello Comunity ;)

yesterday i was verry happy to see that Tomato supports my WNR3500L V2.

After i have installed tomato-Netgear-3500Lv2-K26USB-1.28.RT-N5x--101-VPN.chk all working fine. I want to use this Netgear with 3G Huawei Stick and this Device shuld be a ovpn Client. Connection to my ovpn Server is okay from Netgear (ovpn client), but when i want to connect to the Webif from this Netgear Router over OVPN IP the Firewall blocked.

Did anyone can tell me what i have to do ?

I think i need special Iptables Roules but this is too much for me :(

I hope someone can help me.

Thanks in advanced.

Br

Benny