You can create an external login using either Sybase Central or the CREATE EXTERNLOGIN statement.
Only the DBA or user who will be using the external login can add or modify an external login.
Connect to the host database from Sybase Central.
Open the Remote Servers folder for that database and then select the remote server.
Click the External Logins tab.
From the File menu, choose New > External Login.
The Create External Login wizard appears.
Follow the instructions in the wizard.
Connect to the host database from Interactive SQL.
Execute a CREATE EXTERNLOGIN statement.
The following statement allows the local user fred to gain access to the server RemoteASE, using the remote login frederick with password banana.
CREATE EXTERNLOGIN fred TO RemoteASE REMOTE LOGIN frederick IDENTIFIED BY banana;
For more information, see CREATE EXTERNLOGIN statement.