That is because the computers on your network do not know where the
internal box is.
A quick scenario:
192.168.1.1 wants to connect to 192.168.2.13
it looks inside its network settings, and sees that 192.168.2.13 is not
on his subnet
it checks for other routes that maybe lead to 192.168.2.13, nope,
nothing
then it sends the packet to the default gateway, hoping the gateway
knows what to do with the packet
I've never really checked what happens with such a packet at the
gateway, but it will most likely drop it.
Either way, the packet get's lost.
The best way is to setup your DHCP to push a default route for
192.168.2.13 to 192.168.1.33. If you do not have a DHCP server, you
will have to set a route manually
on each client on the network. Something like this:
route add -host 192.168.2.13 gw 192.168.1.33
This will let the other clients know where the internal box is. Hope
this works.
Regards
bruce wrote:
hi tim...
basically, a laptop connecting via ath0 to my network (and the internet).
the setup is
internal box ------> laptop (wireless) -----> network/internet
eth0 eth0 ath0 eth0
in order to have multiple ports, the eth0/ath0 are on different subnets.
laptop
eth0 192.168.2.33
ath0 192.168.1.33
internal
eth0 192.168.2.13
the setup has to allow the internal box, to communicate with the laptop, as
well as the rest of the network.
the solution (at least for me)
on the internal box
-setup a route command to allow the laptop (eth0)
to be the default gw
on the laptop
-setup iptables to pass/masquerade from eth0 to ath0
this allows me to ping systems from the internal box.
however, i still can't seem to access the internal box, from any other
system in my network... so something in the iptables/masquerade isn't
working correctly..
-----Original Message-----
From: fedora-list-bounces@xxxxxxxxxx
[mailto:fedora-list-bounces@xxxxxxxxxx]On Behalf Of Timothy Murphy
Sent: Saturday, November 24, 2007 9:20 AM
To: fedora-list@xxxxxxxxxx
Subject: Re: ip masquerading
bruce wrote:
i have a situation where i have a system with two connections, one
wireless, one eth connetion. i can currently connect with the wireless
ath0 to my network/internet/etc...
however, when i activate the eth0 at the same time, i can't access the
network via ath0. as far as i can tell, i need to implement ip masquerade
to have eth0 map, to ath0...
my test ip addresses are:
ath0 - 192.168.1.33
eth0 - 192.168.2.33
any thoughts/comments/pointers...
I don't really understand your setup.
Is this a laptop connecting to a desktop which connects to the internet?
If so, I can't believe that you need ip masquerade to connect via ethernet.
I'm sure the problem is much simpler.
Maybe it's a dhcp problem?
Or maybe you are running a firewall on the desktop
that does not allow access from your first LAN (192.168.1.*)?
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