Guys,

Login your root account and do the following commands.

# /etc/init.d/apf stop
# iptables -F
# rm -Rf /etc/apf
# rm -Rf /etc/rc.d/init.d/apf
# rm -Rf /var/log/apf_log
# rm -Rf /var/log/apfados_log
# rm -Rf /usr/local/sbin/apf
# /sbin/chkconfig --level 345 apf off