CentOS - Mar 2008 - how to setup SFTP log file like vsftpd.log???

We have CENTOS version 3,4 and 5 on DELL servers.  What I want to know is how to
setup SFTP log file similiar to vsftpd.log.  I knew /var/log/secure provide me
login user information, but I need more detail like "file name",
"get/put", etc.

Thanks you for help.

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