Canon MX870 Series User Manual page 1113

Click the Advanced settings.
2.
If the User Account Control screen is displayed, click Yes.
Right-click Inbound Rules, then select New Rule.
3.
If you set outbound rules, right-click Outbound Rules.
Select Port, then click Next.
4.
Select TCP, then select Special local ports: and input "137", then click
5.
Next.
If you open UDP ports, select UDP.
If you open other ports, input the other port's number in Specific local ports:.
Select Allow the connection, then click Next.
6.
Choose the profile for which this rule applies, then click Next.
7.
Input any name and description, then click Finish.
8.
Use the same procedure to open the other ports (138TCP, 138UDP,
9.
139TCP, and 139UDP).
Confirm that the port names are added on the Inbound Rules screen,
10.
then close Windows Firewall.
If you are using any operation system other than Windows 7:
Click Start > Control Panel > Security > Windows Firewall > Change
1.
settings.
In Windows XP, click Start > Control Panel > Security Center > Windows Firewall.
Click the Exceptions tab, and click Add port.
2.
On the Add a Port dialog box, input the following information, and click
3.
OK.
Name: Input any name for the port.
Port number: Input "137".
Protocol: Select TCP.
Repeat steps 2 and 3.
4.
On the Add a Port dialog box, input the same information as you did in step 3 except for
selecting UDP in Protocol.
Use the same procedure to open the other ports (138TCP, 138UDP,
5.
139TCP, and 139UDP).
Confirm that the port names are added on the Exceptions sheet, and
6.
click OK.
Check 5: Change the workgroup name to "WORKGROUP" following the
procedure below.