Hi,

I'm running NetBSD as a firewall/router.  If I try to ftp through
that system to ftp.freebsd.org (maybe others) the machine (firewall)
hangs.  If I go to the console and strike the "enter" key the screen
advances a line but, I get no prompt.  All the remote connections to 
the machine get no response at all.  

If I am running on the firewall I can ftp to the freebsd site and 
download the package.

When the, behind the firewall, machine is running I can see this kind 
of connectivity:

   bigbox[root-7]: uname -a
   NetBSD bigbox 1.5.1_ALPHA NetBSD 1.5.1_ALPHA (BIGBOX) #2: Sun Nov 26 23:01:20 PST 2000
     newhouse@pimin:/usr/src/sys/arch/i386/compile/BIGBOX i386

Yeah that is really old and I should upgrade.
   
   bigbox[root-4]: ifconfig tlp2
   tlp2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
           media: Ethernet autoselect (100baseTX full-duplex)
           status: active
           inet 12.232.64.200 netmask 0xfffffe00 broadcast 255.255.255.255
           inet6 fe80::2a0:ccff:fe3a:d952%tlp2 prefixlen 64 scopeid 0x3
   
   bigbox[root-5]: ifconfig tlp1
   tlp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
           media: Ethernet autoselect (10baseT)
           status: active
           inet 209.128.91.46 netmask 0xfffffff8 broadcast 209.128.91.47
           inet6 fe80::240:5ff:fea0:4eb2%tlp1 prefixlen 64 scopeid 0x2
   
   bigbox[root-6]: ifconfig tlp0
   tlp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
           media: Ethernet autoselect (100baseTX full-duplex)
           status: active
           inet 172.16.89.45 netmask 0xffffff00 broadcast 172.16.89.255
           inet6 fe80::2a0:ccff:fe3a:96e5%tlp0 prefixlen 64 scopeid 0x1
   
   bigbox[root-8]: route get ftp.freebsd.org
      route to: freebsd.isc.org
   destination: freebsd.isc.org
       gateway: 12-232-64-1.client.attbi.com
    local addr: 12-232-64-200.client.attbi.com
     interface: tlp2
         flags: <UP,GATEWAY,HOST,DONE,STATIC>
    recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire
          0         0         0         0         0         0      1500         0 

The machine that causes the problem is connected like this:

   pimin[root-187]: ifconfig de0
   de0: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
           address: 00:40:05:36:73:53
           media: Ethernet autoselect (100baseTX full-duplex)
           status: active
           inet 172.16.89.42 netmask 0xffffff00 broadcast 172.16.89.255
           inet6 fe80::240:5ff:fe36:7353%de0 prefixlen 64 scopeid 0x1

   pimin[root-190]: uname -a
   NetBSD pimin 1.5.2 NetBSD 1.5.2 (GENERIC) #3: Sat Aug 18 23:37:05 CEST 2001 
     he@hamster.urc.uninett.no:/usr/src/sys/arch/i386/compile/GENERIC i386

Yeah, it's old also.
   
I'm not sure what I should be looking at (besides upgrading) in order to figure 
this out.  Any help is appreciated.

TIA,
Paul Newhouse