Download TLS Certificates

To download the certificates of the SSL secured server, use the following command.

openssl s_client -connect <secure authentication server IP and port> -showcerts < /dev/null > server.crt

The following examples show how you can download using different servers.

RED HAT CDN

openssl s_client -connect cdn.redhat.com:443 -showcerts < /dev/null > server.crt

LDAP or Active Directory

openssl s_client -connect the.ldap.server.net:636 -showcerts < /dev/null > server.crt

OAuth (Use the Authorization URL). For example, with GitHub

openssl s_client -connect github.com:443 -showcerts < /dev/null > server.crt