Install Nfsight, as modified from Steronius’ Computing Bits  (follow me explicitly here):
cd /usr/local/src
sudo wget "http://sourceforge.net/projects/nfsight/files/latest/download" -O nfsight.tar.gz
sudo tar xvzf nfsight.tar.gz
cd nfsight-beta-20130323
sudo cp backend/nfsight.pm /var/nfsen/plugins/
sudo mkdir /var/www/html/nfsen/plugins/nfsight
sudo chgrp -R www-data /var/www/nfsen/plugins/nfsight
sudo mkdir /var/www/nfsen/nfsight
sudo cp -R frontend/* /var/www/nfsen/nfsight/
sudo chgrp -R www-data /var/www/nfsen/nfsight/
sudo chmod g+w /var/www/nfsen/nfsight/
sudo chmod g+w /var/www/nfsen/plugins/nfsight/
sudo chmod g+w /var/www/nfsen/nfsight/cache
sudo chmod g+x /var/www/nfsen/nfsight/bin/biflow2picviz.pl

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Create Nfsight database:
Interchange the root user with an Nfsight database user if you’re worried about running the Nfsight db with root.
mysql -u root –p and enter your MySql root password 
mysql> CREATE DATABASE nfsight
mysql> GRANT ALL PRIVILEGES ON nfsight.* TO root@'%' IDENTIFIED BY '<MySql root password here>';
mysql> grant all privileges on nfsight.* TO root@localhost IDENTIFIED BY '<MySql root password here>';
mysql> GRANT ALL PRIVILEGES ON nfsight.* TO 'root'@'%' WITH GRANT OPTION;
mysql> FLUSH PRIVILEGES;
mysql> quit

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Launch the Nfsight web installer; on my server the path is:
http://192.168.42.131/nfsen/nfsight/installer.php
The proper paths for our installation are:
URL = /nfsen/nfsight/
Path to data files = /var/www/nfsen/plugins/nfsight 
You may need to edit detail.php to ensure proper paths for grep, cat, and pcv. They should read as follows:
/bin/grep
/bin/cat
/usr/bin/pcv
Edit /var/nfsen/etc/nfsen.conf with settings from the Nfsight installer.php output as seen in Figure 3.

FIGURE 3: http://holisticinfosec.org/toolsmith/files/nfsight/NfsightNfsenConfig.png

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Restart Nfsen:
/var/nfsen/bin/nfsen stop
/var/nfsen/bin/nfsen start
Check status: /var/nfsen/bin/nfsen status
Last step! Install the hourly cronjob required by Nfsight to periodically update the database:
crontab -e
06 * * * *  /usr/bin/wget --no-check-certificate -q -O - http://management:aggregate@127.0.0.1/nfsen/nfsight/aggregate.php