Well for part of your question you can use rootkithunter (http://rkhunter.sourceforge.net http://rkhunter.sourceforge.net). Google hardening <your distro> shou

Well for part of your question you can use rootkithunter (http://rkhunter.sourceforge.net http://rkhunter.sourceforge.net). Google hardening <your distro> should give a lot of info on best practices.