Very Computer

(I searched Google Groups looking for answers to this problem, so I included
many of the diagnostics I saw asked for for this type of problem)

I am trying to set up an ftp server using wu-ftpd on my linux PC so that
I can
transfer files between it and my Sharp Zaurus, a linux-based PDA. I can
set up
a ppp connection through the USB cradle, and I have successfully ping'd
in both
directions, telnet'd PC->PDA, and accessed my PC's webserver from the PDA's
browser. I am unable to ftp or telnet PDA->PC, however, I can telnet and ftp
the PC to itself (not very useful), even using its address in the PDA-PC
network (192.168.1.1). I always get a "Connection refused" error before
I can
log in from the PDA. My /etc/hosts.(allow|deny) and /etc/ftpusers files are
empty. /etc/xinetd.d/(telnet|ftp) both contain "disable=no" Here they are:

service telnet
{
    flags        = REUSE
    socket_type    = stream      
    wait        = no
    user        = root
    server        = /usr/sbin/in.telnetd
    log_on_failure    += USERID
    disable        = no

Quote:}

service ftp
{
    flags        = REUSE
    only_from    = 192.168.1.2 192.168.1.1
    socket_type    = stream      
    wait        = no
    user        = root
    server        = /usr/sbin/in.ftpd
    server_args    = -l -a
    log_type    = FILE /var/log/ftplog
    log_on_failure    += USERID
    disable        = no

Quote:}

And here's /etc/ftpaccess (untouched from how wu-ftpd installed it):

class   all   real,guest,anonymous  *

limit   all   10   Any              /etc/msgs/msg.dead

readme  README*    login
readme  README*    cwd=*

message /welcome.msg            login
message .message                cwd=*

compress        yes             all
tar             yes             all

log commands real
log transfers anonymous,real inbound,outbound

shutdown /etc/shutmsg

I had to fudge the /etc/xinetd.d/ftp file by copying the telnet file and
modifying it. I did this before I realized that telnet didn't work
either. Here
are the outputs of some commands I saw suggested (run on the PC):

# netstat -nl |grep 21
tcp    0    0 0.0.0:21    0,0,0:*        LISTEN

# ipchains -L
Chain input (policy ACCEPT):
target    prot opt    source        destination    ports
ACCEPT    udp  ------    216.238.0.10    anywhere    domain -> any
ACCEPT    tcp  -y----    anywhere    anywhere    any ->    http
ACCEPT    all  ------    anywhere    anywhere    n/a
REJECT    tcp  -y----    anywhere    anywhere    any ->    0:1023
REJECT    tcp  -y----    anywhere    anywhere    any ->    nfs
REJECT    udp  ------    anywhere    anywhere    any ->    0:1023
REJECT    udp  ------    anywhere    anywhere    any ->    nfs
REJECT    tcp  -y----    anywhere    anywhere    any ->    x11:6009
REJECT    tcp  -y----    anywhere    anywhere    any ->    xfs

(216.238.0.10 is my ISP's DNS)

# ifconfig ppp0
ppp0    Link encap:Point-to-Point Protocol
    inet addr:192.168.1.1  P-t-P:192.1.2  Mask:255.255.255.255
    UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
    RX packets:8 errors:0 dropped:0 overruns:0 frame:0
    TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:3

Here are the commands I use to set up PPP:
on the PC:
# pppd /dev/ttyUSB0 noauth 192.168.1.1:192.168.1.2
on the PDA:
# pppd /dev/ttyUSB0 defaultroute usepeerdns

Any suggestions?

(I hope I've given enough information ;)

-- Will
Seeing is believing; You wouldn't have seen it if you didn't believe it.

I belive in.ftpd and in.telnetd have to set in hosts.allow  (or you could use
the more dangerous ALL:ALL
in hosts.allow)

in.ftpd:ALL             (if you want acess from any host) or
in.ftpd:192.168.1 192.168.3.99 ......  (or whatever hosts or networks you want
to have access)

(and not disallowed in hosts.deny)
---
Lou Boyd

<snipped for size>

Quote:>>log in from the PDA. My /etc/hosts.(allow|deny) and /etc/ftpusers files are
>>empty. /etc/xinetd.d/(telnet|ftp) both contain "disable=no" Here they are:

<snipped again>

Quote:>I belive in.ftpd and in.telnetd have to set in hosts.allow  (or you could use
>the more dangerous ALL:ALL
>in hosts.allow)

>in.ftpd:ALL             (if you want acess from any host) or
>in.ftpd:192.168.1 192.168.3.99 ......  (or whatever hosts or networks you want
>to have access)

>(and not disallowed in hosts.deny)
>---
>Lou Boyd

putting this in hosts.allow didn't help:

in.ftpd:192.168.1.1 192.168.1.2
in.telnetd:192.168.1.1 192.168.1.2

--
Seeing is believing; You wouldn't have seen it if you didn't believe it.

I found the nmap and tcpdump utilities very informative, but they didn't
reall help me to figure out why I can't ftp from my PDA (Zaurus) to my
PC. Maybe the output will make more sense to someone else.

Here's the output of tcpdump on the PC after the same command:
nmap PC -P0 -p 21 --host_timeout 500
is run on first the PC, then the Zaurus:

13:28:59.017004   lo > PC.33101 > PC.ftp: S 3635139294:3635139294(0) win
32767 <mss 16396,sackOK,timestamp 2013798 0,nop,wscale 0> (DF)
13:28:59.017004   lo < PC.33101 > PC.ftp: S 3635139294:3635139294(0) win
32767 <mss 16396,sackOK,timestamp 2013798 0,nop,wscale 0> (DF)
13:28:59.017004   lo > PC.ftp > PC.33101: S 3638028145:3638028145(0) ack
3635139295 win 32767 <mss 16396,sackOK,timestamp 2013798
2013798,nop,wscale 0> (DF)
13:28:59.017004   lo < PC.ftp > PC.33101: S 3638028145:3638028145(0) ack
3635139295 win 32767 <mss 16396,sackOK,timestamp 2013798
2013798,nop,wscale 0> (DF)
13:28:59.017004   lo > PC.33101 > PC.ftp: . 1:1(0) ack 1 win 32767
<nop,nop,timestamp 2013798 2013798> (DF)
13:28:59.017004   lo < PC.33101 > PC.ftp: . 1:1(0) ack 1 win 32767
<nop,nop,timestamp 2013798 2013798> (DF)
13:28:59.037004   lo > PC.ftp > PC.33101: P 1:87(86) ack 1 win 32767
<nop,nop,timestamp 2013800 2013798> (DF) [tos 0x10]
13:28:59.037004   lo < PC.ftp > PC.33101: P 1:87(86) ack 1 win 32767
<nop,nop,timestamp 2013800 2013798> (DF) [tos 0x10]
13:28:59.037004   lo > PC.33101 > PC.ftp: . 1:1(0) ack 87 win 32767
<nop,nop,timestamp 2013800 2013800> (DF)
13:28:59.037004   lo < PC.33101 > PC.ftp: . 1:1(0) ack 87 win 32767
<nop,nop,timestamp 2013800 2013800> (DF)
13:28:59.037004   lo > PC.33101 > PC.ftp: R 1:1(0) ack 87 win 32767
<nop,nop,timestamp 2013800 2013800> (DF)
13:28:59.037004   lo < PC.33101 > PC.ftp: R 1:1(0) ack 87 win 32767
<nop,nop,timestamp 2013800 2013800> (DF)
13:29:03.377004 ppp0 < Zaurus.1038 > PC.ftp: S 3601867083:3601867083(0)
win 5840 <mss 1460,sackOK,timestamp 2495495 0,nop,wscale 0> (DF)
13:29:03.377004 ppp0 > PC > Zaurus: icmp: PC tcp port ftp unreachable
(DF) [tos 0xc0]

Any ideas?

-- Will
Seeing is believing; You wouldn't have seen it if you didn't believe it.

It could be your ipchains rule is blocking telnet request.  Try this
to disable your input ipchains rule:

# ipchains -F input

Good Luck,

--- Jeffrey