Rules don't Work

[Isamp]

Yes, I have this line.

My rules is

DEBUG_IPTABLES()
{
    cmd="$IPTABLES_CMD $*"
    $cmd &>/dev/null || echo "FAILED: $cmd  ERRNO: $?"
}

export IPTABLES_CMD="iptables"
IPTABLES="DEBUG_IPTABLES"

LOG_LEVEL="notice"

:
:

$IPTABLES -N CHECK_FLAGS; $IPTABLES -F CHECK_FLAGS
$IPTABLES -A CHECK_FLAGS -p tcp --tcp-flags ALL FIN,URG,PSH -m limit --limit
5/minute -j LOG --log-level $LOG_LEVEL --log-prefix "NMAP-XMAS:"
$IPTABLES -A CHECK_FLAGS -p tcp --tcp-flags ALL FIN,URG,PSH -j DROP
$IPTABLES -A CHECK_FLAGS -p tcp --tcp-flags SYN,RST SYN,RST -m limit --limit
5/minute -j LOG --log-level $LOG_LEVEL --log-prefix "SYN/RST:"
$IPTABLES -A CHECK_FLAGS -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
$IPTABLES -A CHECK_FLAGS -p tcp --tcp-flags SYN,FIN SYN,FIN -m limit --limit
5/minute -j LOG --log-level $LOG_LEVEL --log-prefix "SYN/FIN:"
$IPTABLES -A CHECK_FLAGS -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP

:
:

When I execute this script, Iptables don't accept the rules above.

-- Isamp