Re: Ad-hoc 802.11b internet access
On Sun, 2003-06-08 at 22:36, Bret Comstock Waldow wrote:
[...]
> I want to get access to the internet from the PDA. I've been reading
> some on the net - but the sources are mixed, of mixed antiquity, and I
> don't know enough to discern what to listen to, whose configuration file
> surgery to attempt, etc. I don't just want to thrash around, but
> there's too much out there I don't know the relevance of to want to try
> to chew through it all. Some talk about distros and boot-up sequences I
> don't have, and there are other differences I can't evaluate.
>
> Has anyone done something like this? It's called "Internet Connection
> Sharing" on Windows. Some sources call it NAT, some invoke ipmasq, or
> masquerading.
Lots of people do this (including me :)). The one thing you will have to
do no matter what is set the laptop's address as the PDA's default
gateway.
Here's a quick-n-dirty way to get it working:
(as root)
modprobe ipchains
ipchains -P forward DENY
ipchains -A forward -i eth0 -j MASQ
echo 1 > /proc/sys/net/ipv4/ip_forward
and then, when you are ready to set up a real firewall, I would
recommend shorewall, it has lots of good documentation and is very
flexible but simple.
-Mark
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