NTOP reference

Getting it to run

• Ntop is run as a service via /etc/init.d/ntop, but it won't start up without being configured. If you invoke ntop directly, it'll do an initial setup guess and prompt you for an administrative user password.
• Removing the line '--disable-schedyield' from /etc/ntop.conf was also necessary.

Errors and Resolutions

Dot Tool Not Found (encountered when hitting Traffic Map)

• This is bundled with Graphviz. Go to Edit Preferences, then enter the key 'dot.key' and give it the path to the actual dot executable. Redhat uses /usr/bin/dot instead of the default /usr/local/bin/dot which Ntop expects to find.

Error 404 on Local Network Traffic Map

• The directory /var/lib/ntop is created, with many files owned root:root. Doing chown -R ntop:ntop /var/lib/ntop will fix this.

-- SeanNewton - 22 Mar 2011