XF 2.1 Can I prevent a banned user from logging in?

[abdfahim]

Time to time I can see banned users in my "Members Online" block (albeit their usernames are stricken-through).

Doesn't it make more sense to prevent them from logging in?

 

[Martok]

If they can't log in then they won't know that they are banned and may attempt to change their password (and then wonder what's going on when they still can't log in).

Don't forget only mods with the necessary permissions can see banned users in the Members Online block.