#! /bin/sh

# Simple bandwidth limiter - <[email]j@4u.net[/email]>

# Change this to your link bandwidth

# (for cable modem, DSL links, etc. put the maximal bandwidth you can

# get, not the speed of a local Ethernet link)

REAL_BW='10Mbit'

# Change this to the bandwidth you want to allocate to WEB.

# We're talking about megabits, not megabytes, so 80Kbit is

# 10 Kilobytes/s

WEB_BW='1000Kbit'

# Change this to your physical network device (or 'ppp0')

NIC='eth0'

tc qdisc del dev "$NIC" root 2> /dev/null

tc qdisc add dev "$NIC" root handle 1: cbq \

bandwidth "$REAL_BW" avpkt 1000

tc class add dev "$NIC" parent 1: classid 1:1 cbq bandwidth "$REAL_BW" \

rate "$REAL_BW" maxburst 1 avpkt 1000

tc class add dev "$NIC" parent 1:1 classid 1:10 cbq \

bandwidth "$REAL_BW" rate "$WEB_BW" maxburst 1 avpkt 1000 bounded

tc qdisc add dev "$NIC" parent 1:10 sfq perturb 10

tc filter add dev "$NIC" parent 1: protocol ip handle 1 fw classid 1:10

iptables -t mangle -A OUTPUT -p tcp --sport 80 -j MARK --set-mark 1