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Anju's avatar
Anju
Icon for Altostratus rankAltostratus
Nov 25, 2019
Solved

winscp error

Folks,

 

I have been trying to access some files from the box since we upgraded the code on F5 (14.1.0.6), can someone help me understand if it has to do with some settings on F5? if so, how can I fix this? Getting the below error -

Received too large (1936094320 B) SFTP packet. Max supported packet size is 1024000 B. The error is typically caused by message printed from startup script (like .profile). This message may start with "sftp". Cannot initialize SFTP protocol. Is the host running a SFTP server?

 

Thank you!

application delivery
BIG-IP
LTM
operations

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  • Kin's avatar
    Kin
    Icon for Employee rankEmployee
    Nov 28, 2019

    I remember there is an article for this. Meanwhile, you only encountered this recently, then it's due to the fix at

    https://support.f5.com/csp/article/K38941195

    You can grant your user Administrator role with Advanced shell access. System-> Users-> username

    OR

    For Administrator role w/o Advanced shell access, on wincp, use the SCP protocol + click Advanced

    Environment, select SCP/Shell, for Shell, type bash

    Ok then connect

    • Anju's avatar
      Anju
      Icon for Altostratus rankAltostratus
      Nov 26, 2019

      Thank you Samir, unfortunately, this option does not work for me.

  • Halil_İbrahim's avatar
    Halil_İbrahim
    Icon for Nimbostratus rankNimbostratus
    Nov 26, 2019

    If you have remote authentication option on F5 you must create local user (named with same as remote user) to connect via sftp.

     

    Or follow this article;

     

    https://support.f5.com/csp/article/K22885182

    • Anju's avatar
      Anju
      Icon for Altostratus rankAltostratus
      Nov 26, 2019

      I followed the later article you mentioned for a time being now. Thank you so much. Need to explore the first option though. Do we need to have root privileges to create a local user account? Also, where can we check the rights given to us on the box?

       

      • Halil_İbrahim's avatar
        Halil_İbrahim
        Icon for Nimbostratus rankNimbostratus
        Nov 27, 2019

        If you dont want to solve this problem in winscp side, you should create local user on F5.

         

        For example; you have AD user named Anju. You will create local user named Anju and give it "advanced shell" right. After that you will login with AD user&pass with "advanced shell" right. ( Only users which have Administrator or User Manager role can create local users)

         

        To see what is your rights, simply when you login CLI you can not pass to shell with "run util bash" command, Only you will have tmsh access.

         

        Don't forget that it is workaround solution. On newer software versions users which have not Advanced shell rights can not make sftp connection. And it is by design.