HTML Form-Based Login
Basic Authentication
Digest Authentication
NTLM - supports CyberArk password vault as well for this
SSL Authentication using X509 Client Certificates in PKCS#12 format , DER or PEM encoded format
SSL Authentication using Smart Cards and HSMS (PKCS#11 security devices)
Kerberos with SPNEGO
Non-standardized authentication methods can be supported by developing your own “plug-ins”