Chris Nowell
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Unix Security Analyzer Help

Prevent root from logging on directly


Accounts -- especially those of super users -- should never be shared. Sharing accounts makes logging and accountability difficult. However, on most Unix systems, the only "super user" account is the "root" account. To facilitate meaningful logging and monitoring, Unix administrators should always log on with their regular user account and then use su to switch to the root account.

In addition to increased accountability, this process prevents malicious users from remotely logging into the most powerful account. This is especially important in Unix because the most powerful username, root, is well-known and often not changed.

This setting forces super users to follow the su process.


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