Specifying a port range with iptables?

[Doug Lawlor]

Is it possible to specify a port range using iptables?  If I present
iptables with the following line it gives me a statement something like:

iptables -A PREROUTING -t nat -p udp -d $MYIP --dport 2074 - 2076 -j DNAT --to 192.168.0.2:2074 - 2076

"Bad argument `-'
Try `iptables -h' or 'iptables --help' for more information.  "

If I take out the spaces between the dashes:

iptables -A PREROUTING -t nat -p udp -d $MYIP --dport 2074-2076 -j DNAT --to 192.168.0.2:2074-2076

I get an invalid port specification or something to that effect.  

Any help on this would be appreciated.  

Doug

-- 
Doug Lawlor <dlawlor at roadrunner.nf.net>

#!/bin/bash
# Script: rc.firewall
# Created on: 17/02/2002
# Author: Doug Lawlor <dlawlor at roadrunner.nf.net
# Modified on: 11/04/2002

# Added code to get the ip from eth0 and 
# put it into a variable for use in the port forwarding.  
#simplified the port forwarding setup.  
# Now uses two lines of scripting instead of 6

# Grab the IP address from eth0 using 'ifconfig'
# and put it into a variable.  
MYIP=`ifconfig eth0 | sed '/.*addr:/!d;s///;s/ .*//'`

# Proform Address translation on all packets going out eth0
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE 

# Open the following ports for Speak Freely
# Forward ports 2074-2076 to 192.168.0.2

# Forward ports 4074-4076 to 192.168.0.2
iptables -A PREROUTING -t nat -p udp -d $MYIP --dport 4074 - 4076 -j DNAT --to 192.168.0.2:4074 - 4076

# End rc.firewall