/etc/ffproxy/db/access.host is in ffproxy 1.6-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | # db/access.host
#
# put IPv4 and IPv6 hostnames (reverse names) allowed to connect here
# use db/access.dyndns for hosts without proper reverse name
# use db/access.ip for IPv4 and IPv6 IP addresses
# empty lines and lines starting with # are ignored
# regular expression matching is used here,
# hostnames are converted to lowercase before matching
#
# Examples:
#^menuhin\.burden\.eu\.org$
#^.*\.mydomain\.org$
#
# This would allow everyone with a valid reverse name to connect:
#.*
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