Forum:Banning in World at War CO-OP

So, is it possible to ban players from co-op games I host? I play a lot of Nazi zombies, but there's a super annoying pest ruining the games, called rage quitters. Those people, who come to your server, claim to be pro's and seem enthusiastic, but play a few rounds, and suddenly leave. Or even worse, those who rage quit after the first time they get downed (and not revived). Or rage quitting anyway. So, I thought would it be possible to ban these people for good? From games I host. I do not want any mid-game leaver to come back ever again to games I host, because they are very likely to do it again. I know it doesn't solve the rage quit problem completely, but at least the same rage quit kid won't be ruining my game a second time. So, is it possible?