Lan to Wan reprise

[Bob Chiodini]

On Sun, 2005-03-13 at 04:31 -0500, Claude Jones wrote:
> I had successfully configured an FC3 box at work to serve as internet 
> router, firewall, web server, DHCP server to my Lan, etc. Tonight, I 
> moved it to its final destination, my home, and I'm completely stuck on 
> one issue.
> The web server works.
> The box has internet access.
> Machines on the Lan are getting DHCP assigned IP addresses. They are 
> also able to see my lone web page.
> However, the machines on the Lan can't get past the firewall. It's not a 
> DNS problem because it doesn't go away if you put an IP address in. I 
> can ping the Wan NIC from the LAN but nothing further than that.
> I've reviewed the procedures over and over  that I used successfully, 
> and I can't find the problem.
> DHCPD loads without errors.
> I've checked and rechecked the firewall and SELinux settings, and they 
> appear to be the same as at the office.
> I've reviewed the network settings for my NICs twenty times.
> IP forwarding and masquerade have been set up.
> What have I overlooked??? I have to have this running in three hours so 
> any suggestions would be greatly appreciated!
> 
> Claude Jones
> Bluemont, VA, USA
> 

IP Forwarding maybe?  net.ipv4.ip_forward = 1 in /etc/sysctl.conf.

Bob...