To What IP/Domain Names ntopng Connects To ?

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ntop tools are totally passive but they occasionally perform some active traffic to operate. Knowing the list of these IP/hosts can help to make sure the firewall infrastructure is ntopng-friendly

  • When ntopng starts up it connects to to check if the host has Internet connectivity.
  • Availability of new packages are periodically connecting to
  • In the top right ntopng corner there is a feed that connects to to fetch the latest news.
  • ntopng periodically downloads blacklists (menu Settings -> Category Lists) so make sure you can connect to them in order to download the files.

If you are using ntopng on a site with no Internet access, ntopng might be slow. For this reason we invite you start ntopng with –offline to disable Internet access to the above sites.

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