Hello, Does any one know how to flush the connection state in the linux (Not flush iptables rule -F). I used transparent mode in the linux (use brctl to bridge eth & eth1). When I tried to use iptables to drop some specified packet and it was fail. So I doubt there are some established connection state exist in the linux to pass these Forbidden connections. My enviroment Linux 2.4.25 Iptables 1.2.11