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Chapter 4: Configuring the Hardened Serial Server

When the Hardened Serial Server is configured as a TCP server, it waits for an incoming connection request from another network

device. You must set up the TCP port number that the Hardened Serial Server will listen for incoming connections and set the

maximum number of simultaneous connections it will support (one for the LES421A, up to two for the LES422A, and up to four

for the LES424A). You can also set up the Hardened Serial Server to accept incoming connection requests only from certain IP

addresses or ranges of IP addresses.

Figure 4-10. TCP configuration.

Setting the Hardened Serial Server to operate as a TCP Client

1. Select “TCP” protocol.

2. Select “to initiate connections (client).”

3. Type the IP address into the “I want to connect to IP address:” box.

4. Type the TCP port number of the server into the “on TCP port number:” box.

5. Select:

• “at power up”—if you want the Hardened Serial Server to always be connected.

• “when the serial port receives data”—if you only want to establish a connection when there is data to be sent.

Setting the Hardened Serial Server to operate as a TCP Server

1. Select TCP protocol.

2. Select “to wait for connections (server).”

The configuration options change. The server IP address box disappears and the “number of connections” box appears.

3. Type the port number in the “I want to wait for connection on TCP port number:” box.

4. Select the maximum number of connections desired in the “and limit the number of connections to:” drop down box.

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Black Box 4-Port Manual do Utilizador Página 29