Hi, Helmut Drodofsky wrote: > When I add the line interactive, the result is > > [root at host sysconfig]# iptables -A INPUT -m state --state NEW -m recent > --update --seconds 60 --hitcount 1000 -p tcp --dport 25 -j LOG > --log-prefix "FW DROP IP Flood: " > > iptables: Unknown error 18446744073709551615 IIRC, you may be hitting a hard limit on the --hitcount value. I was bitten by something similar a few months ago and ended up reducing both the --hitcount and the --seconds value to achieve roughly the same "math". HTH, Mario