iptables: DROP ESTABLISHED sessions?

[jairagoo@gmail.com]

Hello,

i have Debian Woody, kernel v: 2.6.6 and iptables v1.2.9

Is there a way to drop ESTABLISHED sessions?

for example my ip_conntrack file looks like this:
# cat /proc/net/ip_conntrack |grep 1.34
tcp      6 54 ESTABLISHED src=192.168.1.34 dst=<PUBLIC IP> sport=1233
dport=135 src=10.2.2.71 dst=192.168.1.34 sport=135 dport=1233 [ASSURED]

Since the traffic is ESTABLISHED I cannot simply create another rule to
block the host besides restarting the firewall, is there a better
solution?

thanks,
Darth