Restore default iptable Proxmox 3.2

[mudmanc4]

Is there a script / command to restore the default iptables?

I normally use eth1/vmbr1 running through firewall appliance / switch ect. and VPN in through that same interface to access all CT's VM's and nodes.
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Problem
After attempting configuring iptables, and making many changes to eth0 & vmbr0, I've broken something. And cannot access anything on eth0, the node itself cannot reach external networks. Nor can eth0 be reached from external networks.

The VM's and CT's act normal as they use vmbr1

These two nics are on different networks within the datacenter. Completely separated. Per se'

Any guidance would be appreciated.

Thanks