tar -xvzf portsentry-x.xx.tar.gz cd portsentry-x.xx make linux make install
Configuration is via the portsentry.conf file.
TCP_PORTS="list,of,ports,to,block,[..]" UDP_PORTS="list,of,ports,to,block,[..]"
KILL_ROUTE="/usr/local/bin/iptables -I INPUT -s $TARGET$ -j DROP"