DNS Database Update
Urchin includes a DNS database which provides the information used in creating the Domain Reports, including the conversion of IP addresses to domain names. These databases are stored in the Urchin data directory and need to be updated on a periodic basis. Urchin includes geo-update which is a utility that checks for updates and downloads new updates when they are available. The utility is scheduled to check for updates once a month and allows the user to set the day and time for the download or allows for disabling the downloads.
The geo-update utility can also be used to import custom entries into the DNS databases. For more information, see the geo-update utility article in the Advanced Topics -> Utilities section.
Considerations
The geo-update utility needs an internet connection to be able to check for and download new updates. The utility uses port 80 to communicate with the webserver providing the updates. It is possible that proxy servers and firewalls can interfere with Urchin's ability to successfully download updates.