Brother DCP-9045CDN - Manual (Page 136)

Firewall settings (For Network users)
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e
Click the Add port... button.
f To add port 54925 for network scanning, enter the information below:
1 In Name: Enter any description, for example “Brother Scanner”.
2 In Port number: Enter “54925” .
3 Make sure UDP is selected.
Then, click OK.
g Click the Add port... button.
h To add port 54926 for Network PC-Fax, enter the information below:
1 In Name: Enter any description, for example “Brother PC-Fax“ .
2 In Port number: Enter “54926”.
3 Make sure UDP is selected.
Then, click OK.
i
Make sure that the new setting is added and is checked, and then click OK.
j If you still have trouble with your network connection such as Network Scanning or Printing,
check File and Printer Sharing box in the Exceptions tab and then click OK.