Changing Port Numbers
Ports serve as endpoints for communicating with other devices. Typically, conventional port numbers are used for major protocols, but devices that use these port numbers are vulnerable to attacks because these port numbers are well-known. To enhance security, your Network Administrator may change the port numbers. When a port number has been changed, the new number must be shared with the communicating devices, such as computers and servers. Specify the port number settings depending on the network environment.
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To change the port number for proxy server, see Setting a Proxy.
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1
Tap <Menu> in the Home screen.
2
Tap <Network Settings>.
If the logon screen appears, enter the correct ID and PIN using the numeric keys, and then press 
. Logging on to the Machine
. Logging on to the Machine3
Select <TCP/IP Settings> 
<Port Number Settings>.
<Port Number Settings>.4
Select a port.
Learning more about the ports
<LPD>/<RAW>/<WSD Multicast Discovery> Configuring Printing Protocols and WSD Functions
<HTTP> Disabling HTTP Communication
<Multicast Discovery> Configuring Settings for Device Management Software
5
Enter the port number using the numeric keys, and tap <Apply>.
6
Restart the machine.
Turn OFF the machine, wait for at least 10 seconds, and turn it back ON.