|Securing and Optimizing Linux: RedHat Edition -A Hands on Guide|
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Make your keys Read and Write only by the super-user root. This is important because no one needs to touch these files. use the following commands:
[root@deep] /# chmod 600 /etc/ssl/certs/ca.crt [root@deep] /# chmod 600 /etc/ssl/certs/server.crt [root@deep] /# chmod 600 /etc/ssl/private/ca.key [root@deep] /# chmod 600 /etc/ssl/private/server.key
Some possible uses of OpenSSL software, for example OpenSSL can be used to:
Create your own Certificate Server.
Provide data confidentiality, integrity, authentication, and electronic signature in transmission for the users.
Secure electronic commerce transactions.