Set up Kerberos authentication. See Setting up Kerberos authentication.

Start the SQL Anywhere server with the -krb option to enable Kerberos authentication. For example:

dbeng12 -krb -n my_server_princ C:\kerberos.db

Change the public or temporary public option login_mode to a value that includes Kerberos. You must have DBA authority to set this option. For example:

SET OPTION PUBLIC.login_mode = 'Kerberos';

Create a database user ID for the client. (Optionally, you can use an existing database user ID for the Kerberos login, as long as that user has the correct permissions.) For example:

CREATE USER kerberos_user
IDENTIFIED BY abc123;

Create a mapping from the client's Kerberos principal to an existing database user ID by executing a GRANT KERBEROS LOGIN TO statement. This statement requires DBA authority. For example:

GRANT KERBEROS LOGIN TO "pchin@MYREALM.COM" 
AS USER "kerberos_user";

Connect to the database from the client computer. For example:

dbisql -c "KERBEROS=SSPI;Server=my_server_princ"

When Kerberos=SSPI is specified in the connection string, a Kerberos login is attempted.

A connection attempt using the following Interactive SQL statement will also succeed, providing the user has logged on with a user profile name that matches a Kerberos login mapping in a default database of a server:

CONNECT USING 'KERBEROS=SSPI';