ufdbGuard is a URL filter for the Squid web proxy. Besides blocking
access from PCs and smartphones to undesired websites, ufdbGuard
has safety features to make browsing safer and to block remote
access. ufdbGuard supports configuration of groups with different
web access policies, SafeSearch enforcement, SSH tunnel detection,
safer HTTPS traffic, time-based access rules and much more.

WWW: https://www.urlfilterdb.com/