AIX7-00-002104 - The AIX SSH server must use SSH Protocol 2.
Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote access session. Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless. Encryption provides a means to secure the remote connection to prevent unauthorized access to the data traversing the remote access connection (e.g., RDP), thereby providing a degree of confidentiality. The encryption strength of a mechanism is selected based on the security categorization of the information.
Add or edit the following line in the '/etc/ssh/sshd_config' file to support 'Protocol 2' only: Protocol 2 Save the change to /etc/ssh/sshd_config Restart ssh daemon: # stopsrc -s sshd # startsrc -s sshd