Changing Port Numbers
0W20-048
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.
● To change the port number for proxy server, see Setting a Proxy(P. 228) .
1
Press .
2
Use / to select <Network Settings>, and press .
● If the logon screen appears, enter the correct ID and PIN using the numeric keys, and then press .
Logging on to the Machine(P. 34)
3
Select <TCP/IP Settings>
<Port Number Settings>.
4
Select a port, and press .
Learning more about the ports
● <LPD>/<RAW>/<WSD Multicast Discovery> Conguring Printing Protocols and WSD Functions(P. 165)
● <HTTP> Disabling HTTP Communication(P. 232)
● <SNMP> Monitoring and Controlling the Machine with SNMP(P. 191)
● <Multicast Discovery>
Conguring Settings for Device Management Software(P. 196)
5
Enter the port number using the numeric keys, and press .
6
Restart the machine.
● Turn OFF the machine, wait for at least 10 seconds, and turn it back ON.
Security
226
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