Brother MFC-9120CN - Manual (Page 113)

Firewall settings (For Network users)
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d Add port 54925 for network scanning by entering the information below:
1 In Description of service: Enter any description, for example "Brother Scanner".
2 In Name or IP address (for example 192.168.0.12) of the computer hosting this service on
your network: Enter "Localhost".
3 In External Port number for this service: Enter "54925".
4 In Internal Port number for this service: Enter "54925".
5 Make sure UDP is selected.
6 Click OK.
e Click the Add button.
f Add port 54926 for Network PC-Fax by entering the information below:
1 In Description of service: Enter any description, for example "Brother PC-Fax".
2 In Name or IP address (for example 192.168.0.12) of the computer hosting this service on
your network: - Enter "Localhost".
3 In External Port number for this service: Enter "54926".
4 In Internal Port number for this service: Enter "54926".
5 Make sure UDP is selected.
6 Click OK.
g If you still have trouble with your network connection, click the Add button.