Authentication server protocols
Authentication servers support the following protocols:
LDAPv3 simple bind authentication
RFC 2865-compliant RADIUS with PAP and CHAP authentication
Kerberos v5
The following certificate file formats are available for LDAP server settings:
X509 DER format
X509 PEM format
One of the following encryption types must be used for the Kerberos server:
Windows
AES128-CTS-HMAC-SHA1-96
RC4-HMAC
DES3-CBC-SHA1
DES-CBC-CRC
DES-CBC-MD5
Solaris or Linux
DES-CBC-MD5