Hello.  I have a problem that has bothered me for a good portion of a=20
year and I have not been able to fix.  The story behind it is a=20
little long so please bear with me.

I have a cable modem and a LAN with four macs (2 running NetBSD).=20
All four macs are connected to a Asant=E9 FriendlyNet Ethernet hub with=20
the cable modem plugged into the "Uplink" port.  With the cable modem=20
connected, I am unable to have an AppleTalk network.  Without the=20
modem, AppleTalk works fine.  I have discussed this problem with the=20
cable company, but they are too stupid to do anything about it.=20
(They have even asked me for mac help in the past.)  The ultimate=20
problem is that I am unable to share files easily and most=20
importantly, I am unable to network my printer without AppleTalk.

So where does this involve NetBSD you ask?  One of my IIci's (NetBSD=20
1.3.3 -- haven't had enough time to upgrade to 1.4) has two ethernet=20
cards.  I would like this to act as a gateway for three machines and=20
allow TCP/IP traffic to pass on through the cable modem and AppleTalk=20
packets to be blocked from the cable modem, hopefully allowing an=20
AppleTalk network to be formed among the two MacOS computers and the=20
printer.  Unfortunately for me, I have been unable to figure out how=20
to accomplish this task.  I thought routed might work, but I can't=20
figure out how to configure that.  I have also looked at gated, but I=20
have no idea if that will work either.  I have turned on ipfilter in=20
/etc/rc.conf, and this has allowed me to set this computer as the=20
"router address" in the TCP/IP CDEV, but the computer only utilizes=20
ae0, instead of both ae0 and ae1.  This ASCII diagram might help=20
describe what I need.


LAN --->  HUB ---> [NetBSD ae0] ---> [some software] ---> [NetBSD=20
ae1] ---> [cable modem]

*It is important to note that I do not need NAT, since the cable=20
company doesn't care (or seem to notice) how many IP addresses I use.

I am still learning unix and I am unable to find adequate=20
documentation to assist me in configuring the computers to do the=20
tasks that I require.  Please help me figure this out.

Thanks in advance,
Evan Fletcher
--
Evan Fletcher
<evan@router.ecmhs.org>