We gonna install Nessus security scanner on Mandrila Linux,
Firts of all, we install nessus from urpmi

#urpmi nessus

Then we install nessus gtk and nessus Server, that it says nessus security scanner from add and remove software, after that is installed, we create a user on nessus Server as a root

#nessus-adduser

After adding a user on nessus Server we do this

# ln -fs /etc/init.d/nessusd /etc/rc2.d/S20nessusd

# /etc/init.d/nessusd start

# gedit /usr/share/applications/Nessus.desktop

And insert the next text on the gedit file

[Desktop Entry]
Name=Nessus
Comment=Nessus
Exec=nessus
Icon=/usr/share/pixmaps/nessus.xpm
Terminal=false
Type=Application
Categories=Application;System;

Alter that, you can find Nessus on aplications – system tools

Thats it Enjoy it.