When the ssh command is executed, with either 1, 2, or 3 -v switches, it outputs various debug messages. Does anyone know a resource that will provide an explanation for the debug messages that appear in the output?
ssh -vvv -> debug messages
- Thread starter Trevor Chandler
- Start date
The server may inform the client of errors that prevented public key authentication from succeeding after authentication completes using a different method. These may be viewed by increasing the LogLevel to DEBUG or higher (e.g. by using the -v flag).
reference: https://man7.org/linux/man-pages/man1/ssh.1.html
LogLevel - Gives the verbosity level that is used when logging messages from ssh(1). The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1, DEBUG2, and DEBUG3. The default is INFO. DEBUG and DEBUG1 are equivalent. DEBUG2 and DEBUG3 each specify higher levels of verbose output.
reference: https://www.man7.org/linux/man-pages/man5/ssh_config.5.html
You may also refer to WikiBooks for more information on logging and troubleshooting, specific to OpenSSH:
I hope this helps!
reference: https://man7.org/linux/man-pages/man1/ssh.1.html
LogLevel - Gives the verbosity level that is used when logging messages from ssh(1). The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1, DEBUG2, and DEBUG3. The default is INFO. DEBUG and DEBUG1 are equivalent. DEBUG2 and DEBUG3 each specify higher levels of verbose output.
reference: https://www.man7.org/linux/man-pages/man5/ssh_config.5.html
You may also refer to WikiBooks for more information on logging and troubleshooting, specific to OpenSSH:
I hope this helps!
To understand the debug messages from the `ssh` command, you can adjust the `LogLevel` in the SSH configuration. Setting it to DEBUG or using the `-v` flag will show more detailed output about authentication failures. For more information, check the SSH man pages ssh(1)(https://man7.org/linux/man-pages/man1/ssh.1.html) and ssh_config(5)(https://www.man7.org/linux/man-pages/man5/ssh_config.5.html)). Additionally, WikiBooks has useful resources on logging and troubleshooting with OpenSSH.
Thanks for sharingThe server may inform the client of errors that prevented public key authentication from succeeding after authentication completes using a different method. These may be viewed by increasing the LogLevel to DEBUG or higher (e.g. by using the -v flag).
reference: https://man7.org/linux/man-pages/man1/ssh.1.html
LogLevel - Gives the verbosity level that is used when logging messages from ssh(1). The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1, DEBUG2, and DEBUG3. The default is INFO. DEBUG and DEBUG1 are equivalent. DEBUG2 and DEBUG3 each specify higher levels of verbose output.
reference: https://www.man7.org/linux/man-pages/man5/ssh_config.5.html
You may also refer to WikiBooks for more information on logging and troubleshooting, specific to OpenSSH:
I hope this helps!
- New
- Add bookmark
- #4
The server may inform the client of errors that prevented public key authentication from succeeding after authentication completes using a different method. These may be viewed by increasing the LogLevel to DEBUG or higher (e.g. by using the -v flag).
reference: https://man7.org/linux/man-pages/man1/ssh.1.html
LogLevel - Gives the verbosity level that is used when logging messages from ssh(1). The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1, DEBUG2, and DEBUG3. The default is INFO. DEBUG and DEBUG1 are equivalent. DEBUG2 and DEBUG3 each specify higher levels of verbose output.
reference: https://www.man7.org/linux/man-pages/man5/ssh_config.5.html
You may also refer to WikiBooks for more information on logging and troubleshooting, specific to OpenSSH:
OpenSSH/Logging and Troubleshooting - Wikibooks, open books for an open world
en.wikibooks.org