Volevo segnalare questo fantastico script, che installa in automatico tutte le versioni più recenti dei sistemi di Firewall, Antiflood e altro ancora.
Dal sito di Server Monkeys :

Install RKHunter
Install RKHunter Cronjob which emails a user-set email address nightly
Install/update APF
Add SM/TP monitoring IPs (view information on these in Orbit)
Install/update BFD
Install CHKROOTKIT
Install CHKROOTKIT Cronjob which emails a user-set email address nightly
Disable Telnet
Force SSH Protocol 2
Secure /tmp
Secure /var/tmp
Secure /dev/shm
Install/update Zend Optimizer
Install/update eAccelerator
MySQL 4.0 and 4.1 Configuration Optimization (cPanel only)
Upgrade MySQL to 4.1 (cPanel only)
Tweak WHM Settings for security and stability
Configure RNDC if not …

Per installare ffmpeg su un sistema CentOS utilizzeremo {it:subversion} per scaricare i sorgenti e lo compileremo con le librerie necessario (utilizzando anche {it:ruby} ).
cd /usr/src/
mkdir ffmpeg
cd ffmpeg/
wget http://www3.mplayerhq.hu/MPlayer/releases/codecs/essential-20061022.tar.bz2
wget http://rubyforge.org/frs/download.php/9225/flvtool2_1.0.5_rc6.tgz
wget http://easynews.dl.sourceforge.net/sourceforge/lame/lame-3.97.tar.gz
wget http://superb-west.dl.sourceforge.net/sourceforge/ffmpeg-php/ffmpeg-php-0.5.0.tbz2
wget http://downloads.xiph.org/releases/ogg/libogg-1.1.3.tar.gz
wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.1.2.tar.gz
bunzip2 essential-20061022.tar.bz2
tar xvf essential-20061022.tar
tar zxvf flvtool2_1.0.5_rc6.tgz
tar zxvf lame-3.97.tar.gz
bunzip2 ffmpeg-php-0.5.0.tbz2
tar xvf ffmpeg-php-0.5.0.tar
tar zxvf libogg-1.1.3.tar.gz
tar zxvf libvorbis-1.1.2.tar.gz
mkdir /usr/local/lib/codecs/
mv essential-20061022/* /usr/local/lib/codecs/
chmod -R 755 /usr/local/lib/codecs/
yum install -y subversion
yum install -y ruby
yum install -y ncurses-devel
svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
svn checkout svn://svn.mplayerhq.hu/mplayer/trunk mplayer
cd lame-3.97
./configure
make
make install
cd ..
cd libogg-1.1.3
./configure
make
make install
cd ..
cd libvorbis-1.1.2
./configure
make
make install
cd ..
cd flvtool2_1.0.5_rc6
ruby setup.rb config
ruby setup.rb setup
ruby setup.rb install
cd ..
cd mplayer/
./configure
make
make install
cd ..
cd ffmpeg
mkdir …