Restricting access to remote database

I am using Sybase ASA version 9.0.2.

I can access the remote DB using the dbisql ut开发者_如何学Goility by providing HOST as remote system IP address.

I am starting the database using the dbsrv9.exe utility.

Is there any way to restrict the remote access on this database?

If you start the server with -x tcpip(localonly=yes), this tells the server not to accept remote TCP/IP connections. Or you could use -x none to disable all TCP/IP connections, though if you're using jConnect locally, you don't want to do that.

Disclaimer: I work for Sybase in SQL Anywhere engineering.