> -----Original Message----- > From: Rommy Taslim [mailto:rommyt@xxxxxxxxxxxxxxxxxxxxxxxx] > Sent: Monday, June 02, 2003 11:29 PM > To: netfilter@xxxxxxxxxxxxxxxxxxx > Subject: Forward UDP broadcast > > > Hi, > > Anyone knows how to forward UDP broadcast using iptables ? > I need to do something like ipportfw does: > ipportfw -A -u 192.168.4.255/699 -R 192.168.2.255/699 > > which forward all the broadcast on network 4 for port 699 to > network 2. > > I have something like this for iptables: > > iptables -t nat -A PREROUTING -p udp \ > -d 192.168.4.255 --dport 699 \ > --to-destination 192.168.2.255:699 > > But it didn't work. > > Anyone can give me some pointers ?? > > Thanks in advance. > > Rommy This works for me: EXTIP=External IP address PORTFWIP=IP address to forward to # Service at port 645 udp $IPTABLES -A FORWARD -i eth0 -o eth1 -p udp --dport 645 -j ACCEPT $IPTABLES -A PREROUTING -t nat -p udp -d $EXTIP --dport 645 \ -j DNAT --to $PORTFWIP:645 Vilmos
