Get and use secure supported LDAP SASL authentication mechanisms

You don’t have to use insecure clear text Simple BIND authentication for accessing your LDAP servers.

Get list of supported authentication mechanisms:

ldapsearch -h example.com -x -b "" -s base -LLL supportedSASLMechanisms

Kerberos GSSAPI Example:

kinit
ldapsearch -v -Y GSSAPI -h example.com -b "DC=example,DC=com" "(sAMAccountName=someusername)"

DIGEST-MD5 Example:

ldapsearch -v -Y DIGEST-MD5 -h example.com -U someusername -R example.com -b "DC=example,DC=com"\
 "(sAMAccountName=someusername)"
Note: For Active Directory Digest Authentication to work, you may need to enable Reversible encryption on the account’s password and change the user’s password once.