TFTP: cannot send/recive file, showing Error: TFTP, Opcode: Error Code(5)

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                          I am trying to send/receive a file using TFTP from the network switch to ubuntu(VirtualBox on Windows 10 Pro), but getting an error code 5  

By following the steps mentioned below it seems like my localhost is working with TFTP server, I can send and receive the file using localhost:

    /home/abc# tftp localhost
    
    tftp> put test
    
    Sent 16 bytes in 0.0 seconds
        
    tftp> get test
    
    Received 16 bytes in 0.0 seconds

    root@abc:/home/abc# ls -l /var/lib/tftpboot/
    total 4
    -rwxrwxrwx 1 root root 14 Sep  6 18:03 test

***When I used the command in the switch to send/receive the file then I get the error message:*** 

***Trivial File Transfer Protocol***
    
***Opcode: Error Code (5)***
    
***[Destination File: test]***
    
***Error code: Access violation (2)***
    
***Error message: Access violation***
    
***[Expert Info (Warning/Response): TFTP ERROR packet]***
    
***[TFTP ERROR packet]***
    
***[Severity level: Warning]***
    
***[Group: Response]***

***Would you please guide me on how to fix this issue?***

**https://icesquare.com/wordpress/how-to-setup-tftp-on-ubuntu/** 

First, let’s install all the necessary packages:

    sudo apt-get install xinetd tftpd tftp -y

Next, we need to create a configuration file:

    sudo nano /etc/xinetd.d/tftp

Put the following content into the file.
    
    service tftp
    {
       protocol = udp
       port = 69
       socket_type = dgram
       wait = yes
       user = nobody
       server = /usr/sbin/in.tftpd
       server_args = var/lib/tftpboot -s
       disable = no
    }
In the server_args, I have var/lib/tftpboot, which represents the location of the tftp root, i.e., /var/lib/tftpboot. Notice that I skip the root /.

Now let’s change the ownership of the directory:
 
    sudo mkdir /var/lib/tftpboot
    sudo chown -R nobody:nobody /var/lib/tftpboot
    sudo chmod -R 777 /var/lib/tftpboot

and start the TFTP service:

    sudo service xinetd stop
    sudo service xinetd start

Verify the TFTP is running correctly or not:
    
    netstat -na | grep LIST | grep 69
    You should see something like this:
    tcp        0      0 0.0.0.0:69              0.0.0.0:*     LISTEN

Test: Upload a file to TFTP Server
Now let’s test the TFTP server by logging into the server first:
    
tftp localhost
and upload a file:
    
    tftp> put myfile.jpg
    Sent 56733279 bytes in 5.7 seconds
    Quit:
    q

Make sure that file has been uploaded:

    ls -l /var/lib/tftpboot

Test: Download a file from TFTP Server
Now, let’s go to a different directory and download the file we just upload.

    cd some_other_directory

and log in to the tftp server again:

    tftp localhost

and get the file:

    tftp> get myfile.jpg
    Received 56733279 bytes in 5.7 seconds
                        
Asked by Passionate (1 rep)
Sep 7, 2019, 01:25 AM
Last activity: Apr 13, 2025, 04:00 PM
TFTP: cannot send/recive file, showing Error: TFTP, Opcode: Error Code(5)

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