Brother DCP-9045CDN - Manual (Page 135)

Firewall settings (For Network users)
128
7
For Windows Vista™ users
7
a Click the Start button, Control Panel, Network and Internet, Windows Firewall
and click Change settings.
b When the User Account Control screen appears, do the following.
„ Users who have administrator rights: Click Continue.
„ For users who do not have administrator rights: Enter the administrator password and click OK.
c Make sure that Windows Firewall on the General tab is set to On.
d Click the Exceptions tab.