ssh connection refused

    I use Libreelec on a Raspberry since a lot of time,

    and I never had problems connecting to it (from a Mac or from a Linux machine), usually to copy files or general maintenance.

    Today, without changing anything, I see that I cannot connect to it anymore, getting a ssh: connect to host kodi port 22: Connection refused error.

    kodi is the machine name,and is perfectly visible:


    # ping kodi

    PING kodi (192.168.1.136) 56(84) bytes of data.

    ...

    using Libreelec with the remote, I can see it perfectly running, with its 192.168.1.136 address correctly set, and the ssh enabled as usual.

    Please, what do you suggest I do to debug this?

    thank you!

    Alessandro

    The most common cause of "SSH refusal" is old versions of PuTTY on Windows (ciphers changed, no longer compatible) but that's rarely the issue with macOS/Linux clients. Did you enable "disable password auth" in LE settings?

    Quote from chewitt

    The most common cause of "SSH refusal" is old versions of PuTTY on Windows (ciphers changed, no longer compatible) but that's rarely the issue with macOS/Linux clients. Did you enable "disable password auth" in LE settings?

    No, I didnt - I always autenticate by password.

    BTW, I have other two (older) raspberry at home on the local network, and I can connect to them just fine by ssh...

    On the client side ssh -vvv ... will show what is going on.

    On the RPI create a log via LE Settings Addon or Samba share and check for errors.

    Well this was happening to me consistently and this is how I fixed it. I mounted the SAMBA logfiles share and found this gem:

    Quote

    @@@@@@@@@@@@@@@@@@@@@@@@@@
    @ WARNING: UNPROTECTED PRIVATE KEY FILE! @

    @@@@@@@@@@@@@@@@@@@@@@@@@@

    Permissions 0620 for '/storage/.cache/ssh/ssh_host_rsa_key' are too open.

    It is required that your private key files are NOT accessible by others.

    This private key will be ignored.

    1. I shut down the rpi400 and yanked the sd card

    2. I inserted the SD Card into my iMac running fedora

    3. nothing happened

    4. commence searching!

    5. running `lspci` I discovered with some chagrin that I owned a Broadcom BCM57765/57785 SDXC/MMC Card Reader

    6. I ran these commands to mount my wicked high speed sd card as just-sort-highish speed

    Code
    sudo rmmod sdhci_pci sdhci
sudo modprobe sdhci debug_quirks2=4
sudo modprobe sdhci_pci

    A quick reinsertion of the card sufficed. With the SD card mounted I `cd`'d to libreelec's /storage/.cache/ssh and did a

    Code
    sudo chmod 600 ./*

    That having been accomplished, I reinserted the card and rebooted, and hey presto, ssh works again, I no longer need to mount the farkakte smb shares.