[PLUG] network routing

[dan at fiddlers-green.info]

All,

I'm having an interesting problem with my ClarkConnect box. I've currently got a
post on their forums. However, I'm looking to fill in the gaps I have about how
a gateway routes traffic.

My CC box acted as the gateway/firewall/router for my network:

ISP
||
Wireless router/AP
||
CC box
||
hub
||
clients

Now the routing table on my clients looks like this:

 Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.81.0    *               255.255.255.0   U     0      0        0 vmnet1
10.10.10.0      *               255.255.255.0   U     0      0        0 eth0
172.16.106.0    *               255.255.255.0   U     0      0        0 vmnet8
169.254.0.0     *               255.255.0.0     U     0      0        0 eth0
default         10.10.10.1      0.0.0.0         UG    0      0        0 eth0

And on my CC box:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
10.10.10.0      *               255.255.255.0   U     0      0        0 eth1
default         192.168.1.1     0.0.0.0         UG    0      0        0 eth0

What this all syas to me is that anoything sent from 10.10.10.140 to
66.102.7.104 (www.google.com) should be sent up to 10.10.10.1 (the CC box).
Then 10.10.10.1 should see that it the address doesn't fit either 192.168.1.0
or 10.10.10.0 and should send it up to 192.168.1.1 for further processing. Am I
correct in this?

What happens in practice is that my ping to 66.102.7.104 from 10.10.10.140
simply disappears somewhere (I'm assuming at the CC box). It's not just ping
though, anything sent just doesn't come back.

What's more interesting is that one of my wireless clients can ping
10.10.10.140, but 10.10.10.140 can not ping back. Am I missing or just don't
understand something about how gateways work?

thanks,
Dan H.




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