How Do I Fix SSH Debug Messages?

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    Sometimes your computer may return an error code indicating SSH debug messages. There can be several reasons for this problem.


    In this article, we will show you how to enable debug mode regardless of whether SSH is running on Linux. So you can see what actually happens when you run a nice new ssh command to connect to an online Linux server using verbose style or debug mode.

    ssh debug messages

    Also Read: 4 Ways to Speed ​​Up SSH Connections on Linux

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  • The -v switch on the ssh client allows you to run ssh in verbose mode, which outputs debug information about the progress of the SSH connection, which is certainly useful for debugging authentication and login, besides any configuration problem. There are usually different levels of detail; using the -v flags increases the verbosity (max 3).

    The following command should definitely start SSH at level 1, which gives us hundreds of debugging information as shown.

      [secure email address]  ~? rrr -v ssh  [email address] 
    Sample Output
     OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g-fips March 1, 2016debug1: read configuration data of / home / aaronkilik / .ssh / configdebug1: /home/aaronkilik/.ssh/config Line 22: Parameters for *debug1: read system data / etc / ssh / ssh_configdebug1: / etc / ssh / ssh_config Line 19: Parameters for *debug1: connect to help [] port 22.debug1: connection established.debug1: persona file /home/aaronkilik/.ssh/id_rsa type 1debug1: key_load_public: no such id file or directorydebug1: Database /home/aaronkilik/.ssh/id_rsa-cert type -1debug1: key_load_public: no file or directory optionsdebug1: Personal file id /home/aaronkilik/.ssh/id_dsa of type -1debug1: key_load_public: hence no document or directorydebug1: identity file /home/aaronkilik/.ssh/id_dsa-cert key -1debug1: key_load_public: no such file in directorydebug1: identity file /home/aaronkilik/.ssh/id_ecdsa option -1debug1: key_load_public: no such file or directory of credit historydebug1: file /home/aaronkilik/.ssh/id_ecdsa-cert type -1debug1: no key_load_public: such file or directorydebug1: Name and expertise file /home/aaronkilik/.ssh/id_ed25519 type -1debug1: key_load_public: no such id file or directorydebug1: file /home/aaronkilik/.ssh/id_ed25519-cert type -1debug1: Activate compatibility as for protocol mode 2.0debug1: Local Guitar String SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2debug1: remote versionThis protocol is 2.0, remote software version OpenSSH_7.4debug1: Matching: OpenSSH_7.4 pat OpenSSH * compat 0x04000000debug1: authenticate 192 to 168.56.10: 22 as "tecmint"debug1: sent by SSH2_MSG_KEXINITdebug1: got SSH2_MSG_KEXINITdebug1: kex: algorithm:  [email protection] debug1: web host kex: key algorithm: ecdsa-sha2-nistp256debug1: kex: server-> client encryption:  [email security]  MAC: compression:  [email security] debug1: kex: client-> server encryption:  [email security]  MAC: data:  [email security] debug1: expected SSH2_MSG_KEX_ECDH_REPLYdebug1: Server-Host-Integral: ecdsa-sha2-nistp256 SHA256: 1778erqyug4tHJa7D6y / Ep4UWsUtNEOBSMaj32k9oO8debug1: host is known without a doubt and matches the ECDSA startup key.debug1: Enter /home/aaronkilik/.ssh/known_hosts:8. finddebug1: change the block key 134217728 immediatelydebug1: SSH2_MSG_NEWKEYS sentdebug1: wait for SSH2_MSG_NEWKEYSdebug1: Change key after 134217728 blocksdebug1: SSH2_MSG_NEWKEYS receiveddebug1: SSH2_MSG_EXT_INFO receiveddebug1: kex_input_ext_info: server-sig-algs = debug1: SSH2_MSG_SERVICE_ACCEPT receiveddebug1: authentication that can continue: public key, gssapi-keyex, gssapi-with-mic, passworddebug1: the following authentication method: open Keydebug1: RSA provides an official key: /home/aaronkilik/.ssh/id_rsadebug1: the server accepts the key: pkalg rsa-sha2-512 blen 279debug1: activate compression by going to level 6.debug1: authentication succeeded (public key).Checked to help you ([]: 22).debug1: Channel 0: Origin [client session]debug1: request for  [email] debug1: an interactive input session.debug1: commitment: networkdebug1: client_input_global_request: rtype  [email protection]  0debug1: send environment want_replydebug1: env LC_PAPER equals lg_UG.UTF-8debug1: Env send LC_ADDRESS matches lg_UG.UTF-8debug1: send send = lc_monetary lg_UG. Send utf-8debug1: env LC_NUMERIC = lg_UG.UTF-8debug1: send LC_TELEPHONE env = lg_UG.UTF-8debug1: send LC_IDENTIFICATION env = lg_UG.UTF-8debug1: send send LANG En_US = .UTF-8debug1: Env send LC_MEASUREMENT means lg_UG.UTF-8debug1: send send LC_NAME = lg_UG.UTF-8Last internet connection: Saturday, Jan 6, 04:20:11 PM 2018, removed from

    If you try to log out and end your session, you will see messages displayed next to debug.

     [ [email protected]  ~] $ exitexitdebug1: client_input_channel_req: Rchannel type Nothing Exit status Reply 0debug1: client_input_channel_req: Channel Rtype nil  [email  protected]  Reply 0debug1: channel 0: easy: client-session, nchannels 1The connection to is closed.Transmitted: 3392 3120 bytes received in just 118.1 seconds.Bytes Sent Per Second: 28.7, was 26.4debug1: exit state 0debug1: sociable: raw data compression 1159, compressed 573, factor 0.49debug1: compression of incoming data: insufficiently prepared data 573, compressed 1159, factor 2.you 02

    ssh debug messages

    Then, if desired, you can enable additional verbosity (level 2 and only 3) for even larger debug messages, as shown.

     $ -vv ssh  [email security] $ -vv sshv  [email security] 

    That’s all! To find out how often SSH is used, read it shortly after related articles.

    1. How to find all failed SSH login attempts on Linux
    2. How to disable SSH root login on Linux
    3. SSH Passwordless Login with SSH Keygen in 5 Easy Steps
    4. How to disable inactive or inactive ssh connections on Linux

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    Mensagens De Depuracao Ssh
    Komunikaty Debugowania Ssh
    Messages De Debogage Ssh
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    Ssh 디버그 메시지
    Soobsheniya Otladki Ssh
    Messaggi Di Debug Ssh
    Mensajes De Depuracion Ssh
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