I have a Canon PIXMA MX700 connected by ethernet. When I first bought it I was using OS X 10.4, and scanner-initiated scanning worked fine. After upgrading to 10.6, neither scanner-initiated or scanning from MP Navigator EX works with the firewall enabled. The firewall lists exceptions for three applications:
- Canon IJ Network Scan Utility.app
- Canon IJ Network Scanner Selector.app
- MP Navigator EX 1.0.app
I get no further blocked warnings, and
/var/log/appfirewall.log lists nothing for today (my latest attempt to use it).