Environment
NetIQ PlateSpin Recon 4.x
Situation
While attempting to inventory a Linux workload Platespin fails with:
Failed to negotiate a transport component 3des-cbc
Resolution
Check /etc/ssh/sshd_config and verify the following lines are set:
Ciphers 3des-cbc
KexAlgorithms diffie-hellman-group1-sha
Once changed restart the sshd service.
Cause
This can happen when manually specifying sshd ciphers and excluding 3des-cbc or because the operating system vendor no longer allows 3des-cbc as a default cipher in sshd.
Additional Information
Please verify all changes with your system administration team before making changes to sshd. Incorrectly modifying /etc/ssh/sshd_config can cause sshd to no longer start.
Also please verify that 3des-cbc is supported by any software leveraging ssh or modify the Cipher line to include any other required ciphers.