Firewalls and routers

[Doug Bronson]

Yes you are correct about me having three interconnected networks.
A): I have tried differant subnets. Did not seem to help.
B): How do I tell them?
C): D-Link default route is to the cable modem. Linux router/proxy,
default route is to the D-Link router ( set up in the EXT nic config
"eth0"). The internal LAN's default route is to the Linux router/proxy.
Is this what you mean?

Using PM Firewall I do have access to the web. But like I said there is
no other access.
Something must be getting through in order to get on the web. I'm sure
that it is just a simple IPChain problem that I'm just overlooking.

Doug

Jonathan Hutchins wrote:

> I think that the problem is that you have three networks here:  RoadRunner, the
> private DNAT network inside the router, and the private DNAT network inside the
> firewall.  This needs to be, for the network inside the Linux firewall to route
> out through the DLink, it must be distinct from the DLink's internal network.
> 
> The problem may be that both the DLink and the Linux box are using the same
> subnet - usually 192.168.0.x/24.  You need to tell both the DLink and the Linux
> box A) to use different subnets, B) that the other subnet exists, and C) the
> route to the internal, intermediate, and external nets.
> 
> Just guessing though.