Configuring The Tcp/Ip Port Access Setting; Setting The Restricted Server List - Lexmark C54x Administrator's Manual

Securing network connections

Configuring the TCP/IP port access setting

Note: This setting is available only in some printer models.
You can control your network device activities by configuring your device to filter out traffic on specific network ports.
Protocols (such as FTP, HTTP, and Telnet) can be disabled.
Port filtering on devices disables network ports individually. When a port is closed, a device does not respond to traffic
on the specified port whether or not the corresponding network application is enabled. We recommend closing any
ports that you do not plan to use under standard operation by clearing them.
This feature lets you set access settings on the different TCP/IP ports of the device.
1
From the Embedded Web Server, click Settings > Security > TCP/IP Port Access.
Note: A list of TCP/IP ports appears. All ports, except TCP 10000 (Telnet), are enabled by default.
2
Click the check box of the TCP/IP port to change its access setting.
3
Click Submit.

Setting the restricted server list

Note: This setting is available only in advanced-security devices.
Devices can be configured to allow connection only from a list of specified TCP/IP addresses. This action blocks all TCP
connections from other addresses, protecting the device against unauthorized printing and configuring.
1
From the Embedded Web Server, click Settings > Network/Ports > TCP/IP.
2
In the Restricted Server List field, type up to 50 IP addresses, separated by commas, that are allowed to make TCP
connections.
3
From the Restricted Server List Options menu, set the blocking option.
4
Click Submit.
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