Use Nessus to quickly and easily scan your network for services that are vulnerable to attack.
a network administrator,
you not only need to know which hosts are on your network and the
services they are running, but also if those services are vulnerable
to exploits. While Nmap
can only show you what machines and ports are reachable on your
network, a security scanner such as
(http://www.nessus.org) can tell
you if those machines are vulnerable to known exploits.
Unlike a regular port scanner, a security scanner first locates listening services, and then connects to those services and attempts to execute all known exploits. It then records whether the exploit was successful and continues scanning until all available services have been tested. The key benefit here is that you’ll know at a glance how your systems perform against the most recent exploits, and thus know whether they truly are vulnerable to attack.
If you’re feeling a bit adventurous,
Nessus can be installed by simply typing the
lynx -source http://install.nessus.org | sh
This will completely automate the installation of
Nessus, but isn’t really a good
idea since you don’t know what
you’ll be executing on your system until you
actually run it. A better way to install
that retains the benefits of the automated installer is to download
nessus-installer.sh script and execute it manually. After you’ve downloaded the installer script ...