Block IP addresses

Install Firtestarter iptables GUI:

• https://help.ubuntu.com/community/IptablesHowTo

To fix an error with the syslog at startup:

• https://bugs.launchpad.net/ubuntu/+source/firestarter/+bug/776361

sudo gedit /etc/rsyslog.d/99-fixlog.conf

*.=info;*.=notice;*.=warn;\
        auth,authpriv.none;\
        cron,daemon.none;\
        mail,news.none -/var/log/messages