Code:

$ iptables

for the manual:

Code:

$ man iptables

q exits the man

you can configure your own firewall rules

As far as IDS (Intrusion Detection Systems) ? they are out there for LINUX.

Tripwire is supposed to be a good one but the set up is very technical

for a virtual encrypted disk;

you should get root first:
open a terminal ...

Code:

$ sudo -i

Password:

Code:

to open:

$ encfs ~/encrypted ~/visible

to close:

$ fusermount -u ~/visible

you will get an apt-get reply to install encfs

install and follow the screen prompts

What this does is make a encrypted "stash bag" you can open with the above terminal commands.

I am not sure if there might be some conflict with TrueCrypt so backup you stuff unencrypted to a drive or portable storage device; CD, DVD, Flash Drive, etc

Ubuntu / Debian rocks (no more WinBloz)!

Code:

sudo apt-get install scopy

nice back up program, nightly backups w/an easy to use GUI Interface.