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Top Forums UNIX for Advanced & Expert Users Disabling CBC Cipher mode causes login problems Post 303034950 by Neo on Thursday 9th of May 2019 11:45:04 PM
Old 05-10-2019
Does this command work on Solaris?

Code:
ssh -Q cipher

Sorry, I don't have a Solaris box handy.

Please run ssh -Q cipher and update us with the results.

Also, Oracle says this is all you need to do to disable those weak ciphers:

Code:
   
cp -p /etc/ssh/sshd_config /etc/ssh/sshd_config.`date +%d-%b-%Y-%H-%M`

vi /etc/ssh/sshd_config

Ciphers aes128-ctr,aes192-ctr,aes256-ctr
Macs hmac-sha2-256,hmac-sha2-512

svcadm restart ssh

Edit and Update:

I see from the Oracle docs that Solaris does not support ssh -Q

Oracle Docs: ssh - man pages section 1: User Commands
 

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sftp-server(1M) 					  System Administration Commands					   sftp-server(1M)

NAME
sftp-server - SFTP server subsystem SYNOPSIS
/usr/lib/ssh/sftp-server DESCRIPTION
sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer. sftp-server is a subsystem for sshd(1M) and must not be run directly. There are no options or config settings. To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config: Subsystem sftp /usr/lib/ssh/sftp-server See sshd_config(4) for a description of the format and contents of that file. There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. FILES
/usr/lib/sftp-server ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsshdu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5) To view license terms, attribution, and copyright for OpenSSH, the default path is /var/sadm/pkg/SUNWsshdr/install/copyright. If the Solaris operating environment has been installed anywhere other than the default, modify the given path to access the file at the installed location. AUTHOR
Markus Friedl SunOS 5.10 30 Jul 2003 sftp-server(1M)
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