Routing problem (possibly straightforward)

eth0, the external interface is setup up as the gateway.
eth1, the private, and internal interface is connected to the rest of the network -
all routable addresses.

The LAN machines all have public addresses in the same block, and I've tried setting either
of the addresses (the internal inteface or the external one) as their gateway with no luck.

Here's my routing table:
Destination Gateway Genmask Flags Metric Ref Use
Iface
128.211.154.0 * 255.255.255.0 U 0 0 0 eth1
10.0.0.0 * 255.255.0.0 U 0 0 0 eth1
loopback localhost.local 255.0.0.0 UG 0 0 0 lo
default (IT'S eth0's) 0.0.0.0 UG 1 0 0 eth0

Here's the netmasks:
eth0 255.255.255.255
eth1 255.255.255.0

I also aliased eth1 to be part of the same subnet as eth0 and all the
other public addresses (with the same netmask)

Currently, my routing machine can see internet and LAN, but the local
machines can only see each other, and the cards in the routing machine.

For simplicity, assume that all packets are accepted - no firewall at all.
This is how I tested the config to see that it's not working.

Does anyone have any idea about what I need to do to get it working?

Rusty Phillips wrote:

> eth0, the external interface is setup up as the gateway.
> eth1, the private, and internal interface is connected to the rest of the
> network - all routable addresses.
>
> The LAN machines all have public addresses in the same block, and I've
> tried setting either of the addresses (the internal inteface or the
> external one) as their gateway with no luck.
>
> Here's my routing table:
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 128.211.154.0 * 255.255.255.0 U 0 0 0
> eth1
> 10.0.0.0 * 255.255.0.0 U 0 0 0
> eth1
> loopback localhost.local 255.0.0.0 UG 0 0 0 lo
> default (IT'S eth0's) 0.0.0.0 UG 1 0 0
> eth0
>
> Here's the netmasks:
> eth0 255.255.255.255
> eth1 255.255.255.0
>
> I also aliased eth1 to be part of the same subnet as eth0 and all the
> other public addresses (with the same netmask)
>
> Currently, my routing machine can see internet and LAN, but the local
> machines can only see each other, and the cards in the routing machine.
>

Sorry if this sounds like a stupid question, but...
You didn't say much about the hosts on your LAN.
How are the routing tables on the machines on your LAN configured?
Are they Linux/Windows/Other/Mixed?
Do they point to this gateway as their default destination?

George
--
#
#...

They are all strictly Windows machines, and they are set up as
having the internal interface as their gateway.

Each of these machines has a quota with the connection service
(so NAT isn't a good option). HOWEVER, I have gotten around this
by doing round-robin address assignment of the public IPs to the
external interface and assigning all the other interfaces to private
addresses. At least it works.

It would be better, however, if I could assign each internal box
it's own routable address.

> Rusty Phillips wrote:
>
>> eth0, the external interface is setup up as the gateway.
>> eth1, the private, and internal interface is connected to the rest of the
>> network - all routable addresses.
>>
>> The LAN machines all have public addresses in the same block, and I've
>> tried setting either of the addresses (the internal inteface or the
>> external one) as their gateway with no luck.
>>
>> Here's my routing table:
>> Destination Gateway Genmask Flags Metric Ref Use
>> Iface
>> 128.211.154.0 * 255.255.255.0 U 0 0 0
>> eth1
>> 10.0.0.0 * 255.255.0.0 U 0 0 0
>> eth1
>> loopback localhost.local 255.0.0.0 UG 0 0 0 lo
>> default (IT'S eth0's) 0.0.0.0 UG 1 0 0
>> eth0
>>
>> Here's the netmasks:
>> eth0 255.255.255.255
>> eth1 255.255.255.0
>>
>> I also aliased eth1 to be part of the same subnet as eth0 and all the
>> other public addresses (with the same netmask)
>>
>> Currently, my routing machine can see internet and LAN, but the local
>> machines can only see each other, and the cards in the routing machine.
>>
>
> Sorry if this sounds like a stupid question, but...
> You didn't say much about the hosts on your LAN.
> How are the routing tables on the machines on your LAN configured?
> Are they Linux/Windows/Other/Mixed?
> Do they point to this gateway as their default destination?
>
> George

Hi
I have a very similar problem except my internal network is through
dial-in connections. I had this working under red hat 6 and 7 without
problems but cannot seem to get it to work under redhat 9.0. I am starting
to think that IP Forwarding is disabled by default in the kernel. Does
anyone know if this is so?

Regards

Stewart

"Rusty Phillips" <(E-Mail Removed)> wrote in message
news(E-Mail Removed).. .
> eth0, the external interface is setup up as the gateway.
> eth1, the private, and internal interface is connected to the rest of the
network -
> all routable addresses.
>
> The LAN machines all have public addresses in the same block, and I've
tried setting either
> of the addresses (the internal inteface or the external one) as their
gateway with no luck.
>
> Here's my routing table:
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 128.211.154.0 * 255.255.255.0 U 0 0 0
eth1
> 10.0.0.0 * 255.255.0.0 U 0 0 0
eth1
> loopback localhost.local 255.0.0.0 UG 0 0 0 lo
> default (IT'S eth0's) 0.0.0.0 UG 1 0 0
eth0
>
> Here's the netmasks:
> eth0 255.255.255.255
> eth1 255.255.255.0
>
> I also aliased eth1 to be part of the same subnet as eth0 and all the
> other public addresses (with the same netmask)
>
> Currently, my routing machine can see internet and LAN, but the local
> machines can only see each other, and the cards in the routing machine.
>
> For simplicity, assume that all packets are accepted - no firewall at all.
> This is how I tested the config to see that it's not working.
>
> Does anyone have any idea about what I need to do to get it working?
>