Try running ftp in Passive mode...
Also, make sure you do an ipf -E to enable ipfilter and ipnat (not
obvious, but ipnat is "related" to ipfilter).

On Sun, 1 Nov 1998, David Guynn wrote:

> 
> My ipnat.conf is set up:
> 
> map ppp0 192.168.4.0/24 -> 0.0.0.0/32 portmap tcp/udp 10000:40000
> 
> What else do I need?
> 
> 
> -Dave
> > -----Original Message-----
> > From: port-i386-owner@netbsd.org [mailto:port-i386-owner@netbsd.org]On
> > Behalf Of Paul Goyette
> > Sent: Sunday, November 01, 1998 10:31 AM
> > To: David Guynn
> > Cc: port-mac68k@netbsd.org; port-i386@netbsd.org
> > Subject: Re: IPFilter Config; client configuration
> > 
> > 
> > The problem is not on your Mac!
> > 
> > The problem is that the ftp destination host, ftp.gmd.de, does not know
> > how to get back to your Mac's address 192.168.4.3
> > 
> > Unfortunately, there is really no way to "teach" ftp.gmd.de how to reach
> > the Mac, since it's address is in RFC1918 "unroutable" (aka private)
> > address space.
> > 
> > So, you'll need to configure ipnat on the PC so that whenever it gets a
> > packet from 192.168.4.3 it translates that into the PC's registered PPP
> > address.  Then, ftp.gmd.de will know how to get back to your PC, and
> > your PC's ipnat will forward the packets back to the Mac.
> > 
> > On Sun, 1 Nov 1998, David Guynn wrote:
> > 
> > > Okay, i'm back.
> > > 
> > > My network looks like:
> > > 
> > > 	PPP Host
> > >         |
> > > 	  |
> > > 	NetBSD/i386 ---crossover cable--- NetBSD/mac68k
> > > 	192.168.4.2					192.168.4.3
> > > 
> > > I can telnet and ftp between the two hosts. I can ping 
> > 192.168.4.3 and vice
> > > versa.
> > > I set up 192.168.4.2 to IPF the mac68k to PPP. So I did a experiment:
> > > 
> > > 
> > > MAC68k /etc/rc.conf
> > > 
> > > DEFAULTROUTE="192.168.4.2"
> > > 
> > > 
> > > So on the i386 I try to ftp ftp.gmd.de and the same on the mac. 
> > It comes up
> > > on the pc but not on the mac. So how do I configure the mac?
> > > 
> > > --DAVE
> > > 
> > > 
> > 
> > ------------------------------------------------------------------
> > -----------
> > | Paul Goyette      | PGP DSS Key fingerprint:   | E-mail 
> > addresses:        |
> > | Network Engineer  |   BCD7 5301 9513 58A6 0DBC |  
> > paul@whooppee.com       |
> > | and kernel hacker |   91EB ADB1 A280 3B79 9221 |  
> > paul.goyette@ascend.com |
> > ------------------------------------------------------------------
> > -----------
> > 
> 

-----------------------------------------------------------------------------
| Paul Goyette      | PGP DSS Key fingerprint:   | E-mail addresses:        |
| Network Engineer  |   BCD7 5301 9513 58A6 0DBC |  paul@whooppee.com       |
| and kernel hacker |   91EB ADB1 A280 3B79 9221 |  paul.goyette@ascend.com |
-----------------------------------------------------------------------------