The m_nMaxClientsPerAddress data member is a public variable that
specifies the maximum number of clients that are permitted to establish a
connection with the server from a single IP address. After this limit is reached,
the server will will reject additional connections until the number of active
clients drops below this threshold. A value of zero specifies that there is
no limit on the active number of client connections per IP address. Changing
the value of this data member does not have an effect on an active instance
of the server. To change the maximum number of clients on an active server,
use the Throttle method.