The findface-ntls service is to be installed on a designated host to verify the FindFace license. For verification purposes, findface-ntls uses one of the following sources:

  • Ntech Lab global license center if you opt for the online licensing, direct or via a proxy server.
  • USB dongle if you opt for the on-premise licensing.

Use the main web interface to manage findface-ntls:

  • view the list of purchased features,
  • view license limitations,
  • upload a license file,
  • view the list of currently active components.

The following components are licensable:

  • findface-tarantool-server,
  • findface-extraction-api,
  • findface-video-manager,
  • findface-video-worker.


After connection between findface-ntls and a licensable component, or between findface-ntls and the global license server is broken, you will have 6 hours to restore it before the licensable components will be automatically stopped.

The findface-ntls configuration is done through a configuration file /etc/findface-ntls.cfg.

# Listen address of NTLS server where services will connect to.
# The format is IP:PORT
# Use to listen on all interfaces
# This parameter is mandatory and may occur multiple times
# if you need to listen on several specific interfaces or ports.
listen =

# Directory with license files.
# NTLS use most recently generated one.
# Note: "recentness" of a license file is detected not by
#       mtime/ctime but from its internal structure.
# This parameter is mandatory and must occur exactly once.
license-dir = /opt/ntech/license

# You can specify proxy which NTLS will use to access
# global license server. The syntax is the same that is used by curl.
# Proxy is optional
#proxy =

# This is bind address for NTLS web-interface.
# Note: there're no authorization or access restriction mechanisms
#       in NTLS UI. If you need one, consider using nginx as proxy
#       with .htaccess / ip-based ACLs.
# This parameter may be specified multiple times.
ui =

When configuring findface-ntls, refer to the following parameters:

Parameter Description
listen IP address from which licensable services access findface-ntls. To allow access from any IP address, use
license_dir Directory to store a license file.
proxy (Optional) IP address and port of your proxy server.
ui IP address from which accessing the findface-ntls web interface must originate. To allow access from any remote host, set “”.