- What is the IP/mask of your client PC?
- What is the default route on the client PC?
- What is the IP/mask of the firewall's IP on the bridge?
- What is the default route of the firewall itself?
This issue most likely has to do with routing.
Also, is this in VMWare or is it a physical machine?
client any one in 10.10.10.x/24
default route 10.10.10.180 (is on the external 0/0 ethernet part of the bridge)
router has administrative ip address of 10.10.10.184 asigned to the bridge
internal part of the bridge is asigned to 0/1 ethernet
default route of the router 10.10.10.180
Is this in VMWare?
To see the MAC addresses learned by the bridge run this command:
$> ifconfig bridge0 addr
You can try flushing all the learned MAC addresses from the bridge with this command:
$> ifconfig bridge0 flushall
You will also need to use 'arp -an' to investigate the ARP table on the firewall. You will also have to use tcpdump to see how the traffic looks hitting the firewall and leaving the firewall.