By default, client authentication will be set to None and the Protocol will be SSL_TLSv2.
By default, the JSSE (Java Secure Sockets Extension) provided will be set to IBMJSSE2.
There will be a number of ciphers that can be used. Ciphers can be added or removed from the cell or node.
These settings should also be defined in the security.xml file (e.g. /opt/WebSphere/AppServer/profiles/your_profile/config/cells/your_cell/security.xml).