Troubleshooting
Problem
You may find that you receive a fatal error when attempting a SSH connection to QRadar using PuTTY after upgrading to QRadar 7.2mr3.
Symptom
After the upgrade, the following PuTTY exception may be received:
PuTTY Fatal Error:
Couldn't agree a client-to-server cipher (available: aes128-ctr,aes192-ctr,aes-256-ctr,arcfour256,arcfour128,arcfour)
Cause
An older version of PuTTY may be in use which does not support the cipher used by this version of QRadar.
Resolving The Problem
Upgrading to PuTTY version .60 or later will address the issue.
Where do you find more information?
[{"Product":{"code":"SSBQAC","label":"IBM Security QRadar SIEM"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Component":"Integrations - 3rd Party","Platform":[{"code":"PF016","label":"Linux"}],"Version":"7.2","Edition":"All Editions","Line of Business":{"code":"LOB24","label":"Security Software"}}]
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Document Information
Modified date:
16 June 2018
UID
swg21687060