In an operation support system 1 according to the present invention, a
first operation room 1A, a second operation room 1B, a third operation
room 1C, . . . , a conference room 1D, and the like are connected by an
IP network via an operation room communication line 8, are connected to
the Internet by a WEB server 7 via an in-house communication line 6, and
are externally connected via a communication line 9. A first controller 3
in the first operation room 1A has a table for registering an IP address
for permitting the connection to a connecting request destination which
requests the connection. A determining device 2 in the first operation
room 1A determines whether the connection to the connection request
destination is permitted or refused depending on the presence or absence
of the IP address registered in the table when the connection request
destination requests the connection.
