root@pella:/home/iam.tj # grep SSL  /etc/apache2/sites-enabled/0-iam.tj.conf
SSLEngine on
SSLCertificateFile /home/iam.tj/ssl.cert
SSLCertificateKeyFile /home/iam.tj/ssl.key
SSLCertificateChainFile /etc/ssl/certs/WoSign.CA.Intermediate.ca-chain.pem
 SSLVerifyClient optional
 SSLRequireSSL

root@pella:/home/iam.tj # ls -l ssl.*
lrwxrwxrwx 1 iam  iam  20 Jul 10  2013 ssl.cert -> ssl/certs/iam.tj.pem
lrwxrwxrwx 1 root root 18 Jun 28  2013 ssl.csr -> ssl/csr/iam.tj.csr
lrwxrwxrwx 1 root root 22 Jun 28  2013 ssl.key -> ssl/private/iam.tj.key

root@pella:/home/iam.tj # ls -l ssl/certs/iam.tj.pem
lrwxrwxrwx 1 iam iam 33 Jul 17 16:57 ssl/certs/iam.tj.pem -> iam.tj.Wosign.solo.2018-06-29.pem

root@pella:/home/iam.tj # ls -l ssl/private/iam.tj.key
lrwxrwxrwx 1 root root 26 Jun 29 14:31 ssl/private/iam.tj.key -> iam.tj.4096.2015-06-29.key