SecurityHowTo

Security for HD-Installed Knoppix

The following are the basic steps to keeping your computer secure through software updates.

Make sure you have the debian security update APT source in your /etc/sources.list  

 deb http://security.debian.org stable/updates main contrib non-free
 deb http://security.debian.org testing/updates main contrib non-free
 deb http://security.debian.org unstable/updates main contrib non-free

regulary, run

 apt-get update

and

 apt-get upgrade

Keep an eye on http://www.debian.org/security/ , when there are updates you can download the .deb files individually then install them by running
dpkg -i PACKAGE_NAME.deb

You can subscribe to the debian-security-announce mailing list to be sent an email when there is a new security update.
http://lists.debian.org/debian-security-announce/

Security is not a simple thing, the best reference is The Securing Debian Howto : http://www.debian.org/doc/manuals/securing-debian-howto/

Q: how to make a encrypted filesystem and also swap Q: how to encrypt all network and internet traffics