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Old 04-12-2011, 07:32 AM   #1
adetheheat
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using tftp - can't get image, but can ping both ways


I have created a /tftpboot directory and chmod it to 777.
I have put an image 'uImage' on my Debian box under /tftpboot

In directory /etc/xinetd.d/ I have created file tftp:

Service tftp
{
disable = no
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = /tftpboot
log_type = SYSLOG daemon info
log_on_failure = HOST
log_on _success = HOST
}

I restart tftp server with:

/etc/init.d/xinetd restart


Now I can ping the debian box from my pc and vice versa.
Now when I try to do an ftp:

tftp 192.168.2.211 GET uImage

I keep geting timeouts although uImage is on the debian box and it appears the tftp server is running.
 
Old 04-12-2011, 09:18 AM   #2
sag47
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Is the firewall blocking it?

Try on the server.
Code:
tftp 127.0.0.1 GET uImage
If that works then it is likely a firewall issue.

Last edited by sag47; 04-12-2011 at 09:21 AM.
 
Old 04-12-2011, 10:06 AM   #3
adetheheat
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Quote:
Originally Posted by sag47 View Post
Is the firewall blocking it?

Try on the server.
Code:
tftp 127.0.0.1 GET uImage
If that works then it is likely a firewall issue.
Started tftp. Typed connect 127.0.0.1 - seemed to connect ok.
The get uImage call got Transfer Timed out response.
 
Old 04-12-2011, 12:01 PM   #4
michaelk
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Is the tftp server actually installed? The connect command does not actually create a connection.
What distribution are you running?
 
Old 04-12-2011, 12:07 PM   #5
adetheheat
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Quote:
Originally Posted by michaelk View Post
Is the tftp server actually installed? The connect command does not actually create a connection.
What distribution are you running?
I'n running Debian.I think tftp is installed as I can start it with

>tftp
from the tftp prompt connect successfully and then the get fails with timeout.

cheers
 
Old 04-12-2011, 12:34 PM   #6
michaelk
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Does /usr/sbin/in.tftpd exist?
tftp is the client, in.tftpd is the server. The connect command only saves the hostname it does not actually create a connection.

In a nutshell when xinetd detects a packet on port 69 it will launch the server tftpd. The client is not detecting anything from the server and so times out.

Last edited by michaelk; 04-12-2011 at 12:42 PM.
 
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Old 04-13-2011, 05:28 AM   #7
adetheheat
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ok, thanks MichaelK,
getting further now.
the file in.tftpd now exists.

Now on the linux box I can do 'tftp'.
I can connect to 127.0.0.1
I do the get uImage. It waits for a while before coming back with a 'Transfer Timed out' message.
uImage is definitley there in /tftpboot. I also get the same error if I try and do a non existent file.

If I go to a dos prompt on another pc and do an ftp then connect to the linux box I get weird errors about:

Can't exec "/usr/sbin/pure-ftpd": No such file or directory at /usr/sbin/pure-ft
pd-wrapper line 174.
/usr/sbin/pure-ftpd-wrapper: Cannot exec /usr/sbin/pure-ftpd: No such file or di
rectory at /usr/sbin/pure-ftpd-wrapper line 174.
Connection closed by remote host.


Not sure these are relevant but it does mean maybe that I will have issues doing an ftp

Last edited by adetheheat; 04-13-2011 at 05:30 AM.
 
Old 04-13-2011, 06:04 AM   #8
michaelk
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Change the server_args to the following
Quote:
server_args = -s /tftpboot
 
Old 04-13-2011, 06:20 AM   #9
adetheheat
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Same problem. What I'm doing is
1. #tftp
2. >connect 127.0.0.1
3. >get uImage
 
Old 04-14-2011, 04:08 AM   #10
adetheheat
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anyone ? ftp not working on my pc
 
Old 04-14-2011, 07:30 AM   #11
michaelk
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Lets get tftp working and then we can worry about ftp.
What are the permissions of /tftpboot and uImage?
 
Old 04-14-2011, 07:40 AM   #12
adetheheat
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firsly thanks for your help Michael,
permissions on /tftboot 777 and uImage is 644 ie it has read access for everyone.
Aside: I was unaware that ftp and tftp were different tools. I'm using tftp as you know.
 
Old 04-14-2011, 07:58 AM   #13
michaelk
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Try turning on trace and verbose to help. These are tftp commands.
So
1. #tftp
2. >connect 127.0.0.1
3. >trace
4. >verbose
5. >get uImage
Post any debug infomation.
 
Old 04-14-2011, 08:15 AM   #14
adetheheat
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getting from 127.0.0.1:uimage to uimage
sent RRQ <file=uimage, mode=netascii>
sent RRQ <file=uimage, mode=netascii>
sent RRQ <file=uimage, mode=netascii>
sent RRQ <file=uimage, mode=netascii>
Transfer timed out
 
Old 04-14-2011, 07:31 PM   #15
michaelk
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The client is not getting a response from the server. Make sure that xinetd is running. Is there any thing in the /etc/hosts.deny file?
 
  


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