Re: MASQ/Firewall on a Mac?
Kevin van Haaren wrote:
At 3:39 PM +0200 10/13/01, Michel Dänzer wrote:
On Sat, 2001-10-13 at 06:27, Michael D. Crawford wrote:
I'm thinking of setting up my Mac 8500 with Debian PowerPC to use
it as a
firewall and IP Masquerading server. Does this work OK, and are
issues I should know about?
Like does the kernel support for this work OK on PowerPC, and have
space utilities been ported to PowerPC?
Yes and yes. Such software shouldn't have any architecture dependencies
so they would be very badly written if they didn't work out of the box
in the first place.
The only caveat I would add is that if you want to use iptables
instead of ipchains, you'll need to get a 2.4 kernel that works
reliably on PowerPC. I have been using a stock 2.4.10 kernel on a
C500 (603e chip) that seems to work pretty good (except for the
AdvanSys scsi drivers). I don't run it as a masquerade/firewall box.
I've made it work under both 2.2 and 2.4 kernels. I'm not sure the
2.2.19 kernel_image deb in potato is configured properly, but the one in
If using 2.4, e.g. the 2.4.8-powerpc deb in sid (or newer, I haven't
dselected in the last week), you just need to load the ipchains module
using modconf (to make sure it loads at boot time).
Next, set up /etc/network/interfaces properly so you can ping machines
on the internet and on your LAN.
Then with either kernel, just "apt-get install ipmasq" and your
masquerading box will be set up with very conservative firewall rules.
And it will restart when you reboot. If you use PPP, it will start and
stop with each connect/disconnect. It's all automatic, including
detection of which interface is on the internet. Yes, it's that simple.
Isn't Debian great?
The only complication I've had is that it doesn't work properly with
dhcpcd unless you configure it (using dpkg-reconfigure ipmasq) to run
the ipmasq init.d script as late as possible, I think after network
services. But it works fine either way with dhcp-client.
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