How do I connect to an SMB share requiring a user name and password?

I have a samba share on my LAN that requires a username and password to obtain write access (otherwise it defaults to read-only).

I can't figure out where in the Unity desktop I can connect to the share and be prompted for my login credentials. I can mount the drive, of course, but then I'm browsing as a guest (read-only).

What gives?

In top menu of the file browser click Go>Location and enter smb://user@host/sharename. You will then be prompted to enter a password.

If you have a Guest account without a password:

smb://Guest:@server_name

If you have a user account with a password:

smb://user_name:password@server_name

If you have a user account but only want to be prompted for the password:

smb://user_name:*@server_name