Questions to fail2ban

[Azurel]

1. Why is default "ssh-iptables" activated but not this both too: "ssh-iptables-ipset4" and ssh-iptables-ipset6"? belongs this three not together?

2. Is here a description for all items in module fail2ban? What is plesk-apache-badbot"? What is "postfix-tcpwrapper" ............. and why is in documentation another item description listed? In docu is "postfix-sasl", but in plesk panel is instead "postfix-tcpwrapper". Is this the same?: http://download1.parallels.com/Ples...inistrator-guide/index.htm?fileName=73382.htm