hi Antony. yo can do this with iproute2 . You have to mark TCP packet with iptables like an example ip route add default via 148.245.164.1 table 40 # this is your default router iptables -t mangle -I PREROUTING -d 150.50.53.5 -j MARK --set-mark 0x10 # mark who goes 150.50.53.5 ip rule add fwmark 0x10 table 40 # best regards Mehmet AK ----- Original Message ----- From: "Antony Stone" <Antony@xxxxxxxxxxxxxxxxxxxx> To: <netfilter@xxxxxxxxxxxxxxxxxxx> Sent: Friday, March 19, 2004 10:18 PM Subject: Re: map internal ip > On Friday 19 March 2004 6:56 pm, Omar Armas wrote: > > > I have the following config: > > > > (public ip) > > eth0 > > Firewall > > eth1 (150.50.53.4) > > > > 148.145.133.1 (vpn router) > > > > 150.50.57.0/24 > > (LAN, including a server with 150.50.57.2) > > > > *Class 150.50.57.0/24 is routed to 148.245.164.1 > > > > I want that when people(from eth1 lan) goes to 150.50.53.5, be > > redirected to 150.50.57.2. > > > > I tried: > > > > iptables -t nat -A PREROUTING 150.50.53.5 -j DNAT --to-destination > > 150.50.57.2 > > > > But doesn't seem to be working. Any idea if it is possible and how to do > > it? > > That looks correct. Do you have a suitable FORWARD rule to allow the > translated packets through the firewall? > > Does 150.50.57.2 know how to route the replies back again (through the > firewall)? > > How are you testing? > > I'm not sure I understand the significance of the "VPN router" shown on your > diagram with only a single IP address - can you explain further what this > means, and what is its relevance to the setup? > > Regards, > > Antony. > > -- > Never write it in Perl if you can do it in Awk. > Never do it in Awk if sed can handle it. > Never use sed when tr can do the job. > Never invoke tr when cat is sufficient. > Avoid using cat whenever possible. > > Please reply to the list; > please don't CC me. > >