#!/bin/bash
# add MYSHAPER-OUT chain to the mangle table in iptables - this sets up the table we'll use
#                                                      to filter and mark packets.

DEV=eth0

# Reset everything to a known state (cleared)
iptables -t mangle -D POSTROUTING -o $DEV -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

if [ "$1" != "install" ] 
then 
        exit
fi

iptables -t mangle -N MYSHAPER-OUT
iptables -t mangle -I POSTROUTING -o $DEV -j MYSHAPER-OUT

# add fwmark entries to classify different types of traffic - Set fwmark from 20-26 according to
#                                                             desired class. 20 is highest prio.
iptables -t mangle -A MYSHAPER-OUT -p tcp --sport 0:1024 -j MARK --set-mark 23 # Default for low port traffic 
iptables -t mangle -A MYSHAPER-OUT -p tcp --dport 0:1024 -j MARK --set-mark 23 # "" 
iptables -t mangle -A MYSHAPER-OUT -p tcp --dport 20 -j MARK --set-mark 26     # ftp-data port, low prio
iptables -t mangle -A MYSHAPER-OUT -p tcp --dport 5190 -j MARK --set-mark 23   # aol instant messenger
iptables -t mangle -A MYSHAPER-OUT -p icmp -j MARK --set-mark 20               # ICMP (ping) - high prio, impress friends
iptables -t mangle -A MYSHAPER-OUT -p udp --dport 123 -j MARK --set-mark 20    # NTP should be low-lag
iptables -t mangle -A MYSHAPER-OUT -p udp --dport 53 -j MARK --set-mark 21     # DNS name resolution (small packets)
iptables -t mangle -A MYSHAPER-OUT -p tcp --dport ssh -j MARK --set-mark 22    # secure shell
iptables -t mangle -A MYSHAPER-OUT -p tcp --sport ssh -j MARK --set-mark 22    # secure shell
iptables -t mangle -A MYSHAPER-OUT -p tcp --dport telnet -j MARK --set-mark 22 # telnet (ew...)
iptables -t mangle -A MYSHAPER-OUT -p tcp --sport telnet -j MARK --set-mark 22 # telnet (ew...)
iptables -t mangle -A MYSHAPER-OUT -p ipv6-crypt -j MARK --set-mark 24         # IPSec - we dont know what the payload is though...
iptables -t mangle -A MYSHAPER-OUT -p tcp --sport http -j MARK --set-mark 25   # Local web server
iptables -t mangle -A MYSHAPER-OUT -p tcp -m length --length :64 -j MARK --set-mark 21 # small packets (probably just ACKs)
iptables -t mangle -A MYSHAPER-OUT -p tcp --sport 3389 -j MARK --set-mark 23   # windows remote computer connection
iptables -t mangle -A MYSHAPER-OUT -m mark --mark 0 -j MARK --set-mark 26      # redundant- mark any unmarked packets as 26 (low pri

