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|
CONNTRACK=conntrack
SRC=1.1.1.1
DST=2.2.2.2
SPORT=2005
DPORT=21
case $1 in
dump)
echo "Dumping conntrack table"
$CONNTRACK -L
;;
flush)
echo "Flushing conntrack table"
$CONNTRACK -F
;;
new)
echo "creating a new conntrack"
$CONNTRACK -I --orig-src $SRC --orig-dst $DST \
--reply-src $DST --reply-dst $SRC -p tcp \
--orig-port-src $SPORT --orig-port-dst $DPORT \
--reply-port-src $DPORT --reply-port-dst $SPORT \
--state LISTEN -u SEEN_REPLY -t 50
;;
new-simple)
echo "creating a new conntrack (simplified)"
$CONNTRACK -I -s $SRC -d $DST \
-p tcp --sport $SPORT --dport $DPORT \
--state LISTEN -u SEEN_REPLY -t 50
;;
new-nat)
echo "creating a new conntrack (NAT)"
$CONNTRACK -I -s $SRC -d $DST \
-p tcp --sport $SPORT --dport $DPORT \
--state LISTEN -u SEEN_REPLY -t 50 --dst-nat 8.8.8.8
;;
get)
echo "getting a conntrack"
$CONNTRACK -G -s $SRC -d $DST \
-p tcp --sport $SPORT --dport $DPORT
;;
change)
echo "change a conntrack"
$CONNTRACK -U -s $SRC -d $DST \
-p tcp --sport $SPORT --dport $DPORT \
--state TIME_WAIT -u ASSURED,SEEN_REPLY -t 500
;;
delete)
$CONNTRACK -D -s $SRC -d $DST \
-p tcp --sport $SPORT --dport $DPORT
;;
output)
proc=$(cat /proc/net/ip_conntrack | wc -l)
netl=$($CONNTRACK -L | wc -l)
count=$(cat /proc/sys/net/ipv4/netfilter/ip_conntrack_count)
if [ $proc -ne $netl ]; then
echo "proc is $proc and netl is $netl and count is $count"
else
if [ $proc -ne $count ]; then
echo "proc is $proc and netl is $netl and count is $count"
else
echo "now $proc"
fi
fi
;;
dump-expect)
$CONNTRACK -L expect
;;
flush-expect)
$CONNTRACK -F expect
;;
create-expect)
# requires modprobe ip_conntrack_ftp
$CONNTRACK -I expect --orig-src $SRC --orig-dst $DST \
--tuple-src 4.4.4.4 --tuple-dst 5.5.5.5 \
--mask-src 255.255.255.0 --mask-dst 255.255.255.255 \
-p tcp --orig-port-src $SPORT --orig-port-dst $DPORT \
-t 200 --tuple-port-src 10240 --tuple-port-dst 10241\
--mask-port-src 10 --mask-port-dst 300
;;
get-expect)
$CONNTRACK -G expect --orig-src 4.4.4.4 --orig-dst 5.5.5.5 \
--p tcp --orig-port-src 10240 --orig-port-dst 10241
;;
delete-expect)
$CONNTRACK -D expect --orig-src 4.4.4.4 \
--orig-dst 5.5.5.5 -p tcp --orig-port-src 10240 \
--orig-port-dst 10241
;;
*)
echo "Usage: $0 [dump"
echo " |new"
echo " |new-simple"
echo " |new-nat"
echo " |get"
echo " |change"
echo " |delete"
echo " |output"
echo " |flush"
echo " |dump-expect"
echo " |flush-expect"
echo " |create-expect"
echo " |get-expect"
echo " |delete-expect]"
;;
esac
|
