Configuring the Firewall

If you want to use the printer auto detection and monitoring functions on a computer that is protected by a firewall application, some firewall settings might have to be changed.

For example, the following firewall-related problems can occur if your computer is running Windows XP SP2 under its default settings:

The printer is not automatically detected when you click the [Detect...] button.
Error information and the status of the print job do not appear in the Printer Monitor event list.

Use the following procedure to resolve these problems.

On the [Start] menu, click [Control Panel], and then click [Windows Firewall] in the [Security Center] category.
Select the [Exceptions] tab, and then click [Add port...].
Enter “162” in the [Port number] box, and then click [UDP].
Enter the [Name] for this port.
To allow connection from only the printer you are using and block connections from any other devices, click [Change scope...]. Then click [Custom list:], and then enter the printer's IP address.
Click [OK].
The name of the port added in step 4 appears in the [Program or port] list.
Select the check box of the newly added port, and then click [OK].

If you are using Windows Vista, and [WinSNMP DLL Support Application Release#xx] appears in the [Program or port] list, select its check box, and then click [OK] to close the [Windows Firewall Settings] dialog box.
For details, see Windows Help.