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able to connect on imac,unable to connect on macbook pro (4 posts)

  • Started 9 years ago by sheilah77
  • Latest reply 9 years ago from Scott McGuire
  • sheilah77 Member

    I am unable to connect to my site and am given the message, SFTP connection could not be opened because the connection to the SFTP server could not be established or was lost. Then it says, to try again, or contact server to verify etc...

    I contacted the server, they had no problems with connection, everything was running smoothly on their side.

    I tried to connect with Fetch from another computer I have and it worked just fine. From the one that doesn't connect,I could connect to ftp.fetchsoftworks.com, but not to my own site.

    I have used Fetch on this computer before with no trouble, all of a sudden, this.

    This is the transcript from my trying to my site, and the one to fetch.

    Connecting to u44608856@livingtheway.com port 22 (3/12/08 2:20:40 PM)
    SSH2_FXP_INIT 3
    Update check skipped at 03/12/2008 02:22 PM (next check after 03/20/2008 02:36 AM)
    Connecting to ftp.fetchsoftworks.com port 21 (Mac OS X firewall is off) (3/12/08 2:29:16 PM)
    Connected to 216.92.39.106 port 21 (3/12/08 2:29:17 PM)
    220 fetchsoftworks.com NcFTPd Server (licensed copy) ready.
    USER anonymous
    331 Guest login ok, send your complete e-mail address as password.
    PASS
    230-You are user #2 of 16 simultaneous users allowed.
    230-
    230 Logged in anonymously.
    SYST
    215 UNIX Type: L8
    PWD
    257 "/" is cwd.
    MACB ENABLE
    502 Unimplemented command.
    PWD
    257 "/" is cwd.
    PWD
    257 "/" is cwd.
    TYPE A
    200 Type okay.
    PASV
    227 Entering Passive Mode (216,92,39,106,209,194)
    Making data connection to 216.92.39.106 port 53698
    LIST -al
    150 Data connection accepted from 84.167.38.97:43014; transfer starting.
    -rw-r--r-- 1 ftpuser ftpusers 1343749 Mar 3 2006 Fetch_4.0.3.sit
    -rw-r--r-- 1 ftpuser ftpusers 3783421 Jan 2 2006 Fetch_5.0.5.dmg
    -rw-r--r-- 1 ftpuser ftpusers 17223880 Nov 13 15:21 Fetch_5.3.dmg
    -rw-r--r-- 1 ftpuser ftpusers 3871569 Nov 13 15:25 Fetch_5.3_Help.pdf
    drwxr-xr-x 3 ftpuser ftpusers 512 Oct 4 21:23 example
    drwx-wx-wx 5 ftpuser ftpusers 10240 Mar 12 08:29 incoming
    226 Listing completed.
    QUIT
    221 Goodbye.

    I deleted the entire application, and downloaded again, but it still was the same. Any suggestions?

    Posted 9 years ago #

  • Scott McGuire Administrator

    Hi,

    Each SFTP server has an "SSH host key" that enables secure transfers. When you connect to an SFTP server, Mac OS X stores that server's key for future use. If the server's key changes and no longer matches the one stored on your Macintosh, this could indicate a security problem. Some programs ignore the error; Fetch instead refuses to make the connection.

    So, my guess is your server's key may have changed and that is the reason your MacBook Pro can't connect. I think we should try clearing your Mac's store of SSH keys, so that you can get a fresh key from the server.

    Please do the following to clear your SSH keys:

    * In Fetch, choose Fetch Help from the Help menu.
    * In the help window, search for "known hosts".
    * Double-click on the "RSA host key differs warning" help topic (it should be the one at the top of the list).
    * A help topic opens in the help window.
    * Scroll down to the "Delete the known_hosts file for me" link.
    * Click the link, and follow the instructions.

    Once that's done, try connecting to your server using SFTP again. If you're warned that "the authenticity of the host can't be established" (you may or may not be), that is normal and you should continue.

    Please let us know if this fixes the problem or not.

    Thanks,

    Scott McGuire
    Fetch Softworks

    Posted 9 years ago #

  • sheilah77 Member

    Originally posted by ScottMcGuire:

    Hi,

    Each SFTP server has an "SSH host key" that enables secure transfers. When you connect to an SFTP server, Mac OS X stores that server's key for future use. If the server's key changes and no longer matches the one stored on your Macintosh, this could indicate a security problem. Some programs ignore the error; Fetch instead refuses to make the connection.

    So, my guess is your server's key may have changed and that is the reason your MacBook Pro can't connect. I think we should try clearing your Mac's store of SSH keys, so that you can get a fresh key from the server.

    Please do the following to clear your SSH keys:

    * In Fetch, choose Fetch Help from the Help menu.
    * In the help window, search for "known hosts".
    * Double-click on the "RSA host key differs warning" help topic (it should be the one at the top of the list).
    * A help topic opens in the help window.
    * Scroll down to the "Delete the known_hosts file for me" link.
    * Click the link, and follow the instructions.

    Once that's done, try connecting to your server using SFTP again. If you're warned that "the authenticity of the host can't be established" (you may or may not be), that is normal and you should continue.

    Please let us know if this fixes the problem or not.

    Thanks,

    Scott McGuire
    Fetch Softworks

    Scott, super. That was it. Thank you very much!! I am off and running again!

    Posted 9 years ago #

  • Scott McGuire Administrator

    Hi,

    Great, we're glad to hear that worked. You're welcome!

    Best,

    Scott McGuire
    Fetch Softworks

    Posted 9 years ago #

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