[Sunhelp] ipfilter fustration

[David Rouse]

I've got a IPX running Sol 7 at home that I'd like to use as a dial-up
router, i.e. it connects to my ISP (dynamic TCP/IP address through PPP,
regular phone modem) and the rest of the home network (a sparc 10 and this
iMac) connect through it using NAT.

On the IPX I've got gcc 2.8.1 (precomplied), ip filters 3.3.11 and
ppp-2.3.10 (I've also used the Solaris aspppd).

The ppp side works, I can dial in and do traceroutes, pings, nslookups. But
when I'm on another machine (the Sparc 10, which has the PPP box as its
default router) I get no response from pings, etc. When I run 'ipmon -o -N'
on the PPP box I get nothing, even while pinging from the other box. When I
run 'ipfstat -s' all the fields are empty except 'misses'.

The local network is set with nodes using the 192.168.0.x range with a
netmask of 255.255.255.192. All of the boxes are in the same subnet. My
nat.conf is:

map ppp0 192.168.0.0/32 -> 0/32 proxy port ftp ftp/tcp
map ppp0 192.168.0.0/32 -> 0/32 portmap tcp/udp 10000:40000
map ppp0 192.168.0.0/32 -> 0/32

Which seems to follow the photon.nepean.uws.edu.au/ppp/nat.html tutorial,
with changes according to my network settings.

Anyone have any troubleshooting advice or pointers as to what dumb thing I'm
doing wrong? Or -- is there an alternative NAT solution?

drouse