Originally Posted by pingu
So what you do is login to the system as ordinary user.
Then you want to change the firewall rules on this system, there is a GUI for that.
When you remove the password, them you can login with your personal username - not root.
I can see 3 possibilities here:
1) You need sudo rights to edit firewall but you are not a sudo user.
But then, deleting the password should not help.
2) You edit firewall as root, so you should enter root's password. (Not a very common configuration but could be.) But again, deleting the password should not help.
3) Your password contains some special character that is not recognized correctly.
How do you open that firewall-GUI-login? Menu-entry, "sudo <firewall-gui>" or what?
Answer to your first question is Yes,
Answer to your second question is Yes, Not root,
Answer to your third question. I am using GNOME desktop, I click on activities and then click on Firewall. then, It asks for my user password which then goes into a LOOP. FYI, the password does not contain any special characters.