network problem with bridge

[kentvccinv]

I have a problem, probably it is a firewall issue. After configuring a bridge and a host interface.
The purpose is to set up a server with a fixed IP address .I Now can see other computers on the internal network and and it seems that the host and guest IP works. I can reach the router from the guest but I can't reach internet. I'm not sure the purpose with Virtual Box is for sharp environment. I have tried letting common ports being allowed at host through the firewall. Most common services and even the tun+ service. But I can't get it work. Is it anyone having any idea. Otherwise probably i have to change VR enviroment.