If you are behind a Firewall you may need to specify how to connect and login. If you're not behind a Firewall, just make sure that the Firewall type is set to No firewall.
First you have to set username, password etc. for the Firewall, note: you don't have to set all fields, just the ones you need. In the combobox Firewall type you have seven predefined Firewall types, one of these should work for most users. If not, or if you encounter any problem logging in, there is a last type: Special. If you choose this type you can specify your own login macro in the edit box below.
We take an example, lets say you need to login like this:
USER fwuser
PASS fwpass
USER user@host:port
PASS pass
Then you have to create a macro like this:
USER %fu
PASS %fp
USER %hu@%hh:%ho
PASS %hp
Note that each line will become a command sent to the Firewall host. If you don't know how to connect, then you can always experiment with all likely and non-likely combinations.
Note that these settings only apply to the ftp protocol, KBear has no internal Firewall support for other protocols. For those you have to fall back to KDE:s own proxy settings.