[maemo-developers] iptables nat and MASQUERADE on N810

[From: André Rodrigues]

Hi,

    On Maemo PC Connectivity, we managed to get MASQUERADE working on N810.
Just install the Maemo PC Connectivity following the instructions at
http://pc-connectivity.garage.maemo.org/2nd_edition/index.html. After that,
you will be able to share the internet of your maemo device.

Regards,

Andre Rodrigues

2009/9/30 Tommi Kyntola <tommi.kyntola at ray.fi>

>
> Has someone gotten MASQUERADE to work on an n810?
>
> My problem is two-fold. First, the kernel compiled in scratchbox
> doesn't work in n810 if I enable CONFIG_NF_CONNTRACK_ENABLED=m
> (or =y for that matters). Has someone gotten this to work?
> Identical .config with =n works fine. I got the modules
> insmodded and iptables -t nat to work once I compiled
> them afterwards. I.e. compiled the zImage with said option
> set to n and then rebuild modules with said option set to m
> (along with few others necessary for full nat).
>
> My set up is an usb ethernet nic set up as eth0, which works
> just fine on the n810. The n810 is to function as a pxe boot
> server. I installed the udhcpd and tftpd and a system
> behind the n810 (eth0) netboots just fine. And it can
> ping the n810, but packets that are forwarded
> out through the n810 wlan0 don't get masqueraded.
> And that's the second and my main problem.
>
> I have the routes and the iptables rules in place and
> also the ip_forward is allowed. The pings for example
> do indeed passthrough and even increase the packet
> cound in matching postrouting -j MASQUERADE rule,
> but mysteriously they are not source-ip-translated.
> I.e. they appear on the wlan0 side unaltered with their
> original source ip (i.e. the ip of the host computer),
> just as-if they would without the masquerade rule.
>
> I was unable to google any reference to someone actually
> getting the MASQUERADE working on an n810.
>
> Any pointers/help appreciated...
>
> cheers,
> Tommi Kyntola
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