Recently I have to install network traffic monitor package on Debian 6.0. After obtaining ntop4.0.3.deb via unstable package, I found out some error msg at the initial setup. Here are the error msg:
ntop: **ERROR** GeoIP: unable to load file GeoLiteCity.dat
ntop: **ERROR** GeoIP: unable to load ASN file GeoIPASNum.dat
Then I downloaded the data from the following url:
Put the above data in the /usr/share/GeoIP/
and ntop is working fine with geography display.