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> Configuring 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> Configuring 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
Summary of Contents for imageclass LBP251dw
Page 1: ...LBP252dw LBP251dw User s Guide USRMA 0786 00 2016 06 en Copyright CANON INC 2015 ...
Page 35: ...LINKS Using the Operation Panel P 30 Basic Operations 29 ...
Page 69: ...Exiting Sleep Mode Press any key on the operation panel Basic Operations 63 ...
Page 75: ...Printing 69 ...
Page 83: ...LINKS Basic Printing Operations P 70 Checking the Printing Status and Log P 78 Printing 77 ...
Page 117: ...LINKS Printing via Secure Print P 112 Printing 111 ...
Page 122: ...Checking the Printing Status and Log P 78 Printing 116 ...
Page 178: ...3 Click OK 4 Click Close LINKS Setting Up Print Server P 173 Network 172 ...
Page 233: ...LINKS Configuring Printer Ports P 168 Security 227 ...
Page 316: ...0 Auto Shutdown is disabled 1 to 4 to 8 hr Setting Menu List 310 ...
Page 355: ...Troubleshooting 349 ...
Page 470: ...Appendix 464 ...
Page 478: ...Manual Display Settings 0W20 08J Appendix 472 ...