Very Computer

Hello:

        I currently have my linux box networked using a ppp link to another
Linux box which is networked via an Ethernet card. I want to make 2 other
computers (one pc running Linux and one Mac using MacTCP+MacPPP) networked,
but I only have one phone line to spare. Is it possible in any way to make
my machine act as a ppp server, and then somehow route all traffic using my
ppp link? I know it sounds complicated, but this is how I have everything
setup now:

-       My machine (Enigma) uses a modem (/dev/cua1) and interface ppp0 to
        connect to the ppp server (Opossum) (/dev/cua1 <--> ppp0)

-       The Mac (Lilac) uses the serial line of Enigma (/dev/cua0) to
        establish the ppp link ppp1 (/dev/cua0 <--> ppp1)

-       Lilac can talk to Enigma (telnet/ftp) and I can ping Lilac from
        Enigma, but Lilac is invisible to the rest of the world.

        How would I go about seting up the routing table to that all traffic
to/from ppp1 is routed through ppp0. Do I have to use routed/gated? And if
so, I would like some help setting them up because I have never used them
before.

        Any help would be appreciated. Please send your replies to

        Regards

        Rajib Rashid
        University of Rochester

Hi Rajib, hello readers,

You do need to use route to configure gateways.
Try tho following:
1. Tell the sysop where your PPP link goes to to enable routes for your other maschines.
I suppose you will be given a subnet in his/her net - otherwise you will get just
numbers.

2. Tell enigma to have a default route to opossum. This makes it act as a gateway.
in /etc/rc.d/rc.inet1:
[ There will be something like pppd /dev/cua1 <IP-enigma>:<IP-opossum> ]
[ and                          pppd /dev/cua0 <IP-enigma>:<IP-lilac> ]
/sbin/route add default metric 1 dev ppp0

3. Tell lilac to use enigma as a gateway:
Use the MacTCP configuration tool.

You dont need to use route and ifconfig for direct PPP-links, the pppd does that for you.
But to act as a gateway for other machines (or nets), you must use route.
You dont need to use gated; but probably you need to configure enigma to be your name
server.
Set the MTU to 296 (between enigma and opussum) if you will use the link concurently with
many machines. This will give better performance (no "stocking" when two users use the
link at the same time).

Read books about TCP/IP.

Good luck,
        torsten

How about this:  if instead of using a regular PPP link for the main link,
instead of assigning a subnet for item #1, use either SLiRP -P (for PPP)
or TIA (SLIP only, but the same thing).

Will this work?  I think it will according to the SLiRP docs, but when I
tried to get just a regular SLiRP PPP link going (no routing yet) I think
my LCP packets were being ignored so it wouldn't come up.  I'm going to
keep trying though.  I want to use SLiRP and PPP, but I may try it with
TIA and SLIP as a fallback.

Cheers,

--
-- Grant R. Bowman                                AdvoTech

--
-- Grant R. Bowman                                AdvoTech