Use the Edit Sim Std Server - SQL UDP Server dialog box to add or edit a SQL UDP Server definition.
You will find a description of what are Sim Std Servers here.
This Sim Std Server emulates Microsoft's SQL Server database system's UDP service.
This UDP services is used to provide information on the location of all SQL Servers and databases known to the host server.
This modest service rose to prominence when it became the target of the infamous SQL Slammer worm.
The main MS SQL Server service runs on TCP.
See the Edit Sim Std Server - SQL Server section for more details.
There are tools that can be used to query the SQL Server UDP service.
The most popular of these tools is sqlping.
You can find this tool and more on this web site:
The SQL UDP server responds to requests to return information on SQL databases.
Depending on the query it is sent it compiles a packet containing a collection of information.
The settings of this Sim Std Server control how this packet is generated and what information is returned to the visitor.