outbound shaping

[nix4me <nix4me@xxxxxxxxxx>]

Well it appears i have no clue what im doing.  I thought i had the below 
script working to shape outbound ftp traffic....however, it is shaping 
inbound traffic too.  I have NO clue why.

Please comment if anyone has any ideas why this doesnt work.  I want to 
shape only outbound ftp traffic and not inbound or lan traffic.


#!/bin/bash
#shaping passive and active outbound ftp traffic on an internal computer 
without affecting inbound and lan speed

# mark the outbound passive ftp packets on ports 50000-51000
iptables -t mangle -D OUTPUT -o eth0 -j MYSHAPER-OUT 2> /dev/null > 
/dev/null
iptables -t mangle -F MYSHAPER-OUT 2> /dev/null > /dev/null
iptables -t mangle -X MYSHAPER-OUT 2> /dev/null > /dev/null

iptables -t mangle -N MYSHAPER-OUT
iptables -t mangle -I OUTPUT -o eth0 -j MYSHAPER-OUT

iptables -t mangle -A MYSHAPER-OUT -p tcp --sport 65436 -j MARK 
--set-mark 20
iptables -t mangle -A MYSHAPER-OUT -p tcp --sport 50000:51000 -j MARK 
--set-mark 20
iptables -t mangle -A MYSHAPER-OUT -m mark --mark 0 -j MARK --set-mark 26
# clear it
tc qdisc del dev eth0 root

#add the root qdisk
tc qdisc add dev eth0 root handle 1: htb default 26

#add main rate limit class
tc class add dev eth0 parent 1: classid 1:1 htb rate 100mbit

#add leaf classes
tc class add dev eth0 parent 1:1 classid 1:20 htb rate 40kbps
tc class add dev eth0 parent 1:1 classid 1:26 htb rate 100mbit

#filter traffic into classes
tc filter add dev eth0 parent 1:0  prio 0 protocol ip handle 20 fw 
flowid 1:20
tc filter add dev eth0 parent 1:0  prio 0 protocol ip handle 26 fw 
flowid 1:26
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