Patching the system (cont.)

Install security programs which will help you in later steps, such as SecureShell, pgp, gnupg.

A few basic changes to the system:

Make sure /tmp has the sticky bit set:

chmod 1777 /tmp

This sets a flag so files in the dir can only be deleted by owner.

Make sure shadow passwords and md5 encryption are enabled. (This should be selected in RH6.x install options and is selectable in Debian installs.)

Change the mode of swap devices to 0600.