The default username and password has more or less remained unchanged for more than 15 years, until recently with the release of Aanval 9, where the username was change to "admin" from "root".
Aanval 8 web interface and earlier
Username "root", password "specter"
Aanval 9 web interface and later
Username "admin", password "specter"
Aanval hardware appliance
Contact sales or support for your specific operating system, or hardware implementation for usernames and passwords. We will not publish these for security reasons.