UDP is a transport layer protocol that sits on top of IP. SQL Anywhere may use UDP to do initial server name resolution and then use TCP for connection and communication.

UDP packets sent by the database server in response to client broadcasts contain no sensitive information. The data contained in these packets is limited to:

• the database server name
• the port number
• the database server version
• the names of databases running on the database server

You can hide database names from UDP broadcast responses by using the -dh database option.

You can specify the -sb server option to disable the UDP listeners.

The TCP/IP implementation for database servers on all Windows platforms uses Winsock 2.2. Clients on Windows Mobile use the Winsock 1.1 standard.

• -dh dbeng12/dbsrv12 database option
• -sb dbeng12/dbsrv12 server option
• -x dbeng12/dbsrv12 server option
• Host connection parameter
• Broadcast (BCAST) protocol option
• Host (IP) protocol option (client side only)
• MyIP (ME) protocol option