I am currently working on setting up a Linux Router. I is running a firewall and DHCP server and I am currently having troubles setting up IP Masqurading (or Network Address Translation [NAT]). I was wondering if any of you have ever used the "iptables" command to set up NAT or seen it done. I have seen it done but the howto's on doing it just suck. I know that my routing table is setup correctly so i know it is not that.

my networks I am routing between are...
Internal: 192.168.4.0/24 (eth1=192.168.4.1)
External:10.60.0.0/16 (eth0=10.60.2.11)

thanks for any and all the help once I have this linux router set up I will post my howto!
well bye guys/gals thanks again...
+Mas0n

P.S. The 192.168.4.0/24 network can ping eth1 and eth0 but cannot ping anything on the 10.60.0.0 and get a reply but I do not get a "Destination Unreachable" I get a "Request Timed Out" so this is why i believe that it is "iptables" that I need to mess with.

Quote: Originally Posted by SirDavisCarrots I am currently working on setting up a Linux Router. I is running a firewall and DHCP server and I am currently having troubles setting up IP Masqurading (or Network Address Translation [NAT]). I was wondering if any of you have ever used the "iptables" command to set up NAT or seen it done. I have seen it done but the howto's on doing it just suck. I know that my routing table is setup correctly so i know it is not that. my networks I am routing between are... Internal: 192.168.4.0/24 (eth1=192.168.4.1) External:10.60.0.0/16 (eth0=10.60.2.11) thanks for any and all the help once I have this linux router set up I will post my howto! well bye guys/gals thanks again... +Mas0n P.S. The 192.168.4.0/24 network can ping eth1 and eth0 but cannot ping anything on the 10.60.0.0 and get a reply but I do not get a "Destination Unreachable" I get a "Request Timed Out" so this is why i believe that it is "iptables" that I need to mess with.

Here you go some links that you might of not tried. Hope this helps.

Netfilter FAQ (Frequently Asked Questions)
http://www.netfilter.org/documentation/

YoLinux: Using Linux iptables or ipchains to set up an internet gateway / firewall / router for home or office.
http://yolinux.com/TUTORIALS/LinuxTu...rkGateway.html

Chapter 5. Saving and restoring large rule-sets
http://www.faqs.org/docs/iptables/iptables-save.html

Chapter 13. Firewalls and iptables
http://www.redhat.com/docs/manuals/l...-iptables.html


Iptables Tutorial 1.1.19
http://www.linuxsecurity.com/resourc...-tutorial.html

Chapter 14 : Linux Firewalls Using iptables
http://www.siliconvalleyccie.com/lin...bles-intro.htm

Hope this helped people out.