This file is indexed.

/etc/arno-iptables-firewall/plugins/dyndns-host-open.conf is in arno-iptables-firewall 2.0.1.f-1.1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# ------------------------------------------------------------------------------
#            -= Arno's iptables firewall - DynDNS Host Open plugin =-
# ------------------------------------------------------------------------------

# To actually enable this plugin make ENABLED=1:
# ------------------------------------------------------------------------------
ENABLED=0

# Enable this to call the helper script at start, so it has immediate effect
# This only works if your network interface is already up and/or DNS services 
# are available.
# ------------------------------------------------------------------------------
DYNDNS_RUN_AT_START=1

# Specify here the cron time(s) to execute the helper script (leave default
# if you don't know what it is).
# ------------------------------------------------------------------------------
DYNDNS_HOST_OPEN_CRON="0,15,30,45 * * * *"

# Enable this option to "fast-fail" when performing DNS queries. When enabled
# a query is only tried once and times out after 1 second
# ------------------------------------------------------------------------------
DYNDNS_DNS_FAST_FAIL=0

# This option allows the plugin to fallback on the "old" cache in case the
# hostname can't be resolved
# ------------------------------------------------------------------------------
DYNDNS_OLD_CACHE_FALLBACK=1

# This value defines the threshold for the amount of successive dns failures
# before we output/display an actual error (to stderr)
# ------------------------------------------------------------------------------
DYNDNS_FAIL_THRESHOLD=4

# This value defines the amount of dns failures before another error is logged
# (to stderr). The default(96) in combination with the default 15 minute
# cron updating will limit logging to once a day
# ------------------------------------------------------------------------------
DYNDNS_FAIL_LOG_REPEAT=96

# Put in the following variables which (dyndns) hosts (names) you want to allow 
# for certain services.
# TCP/UDP port format (DYNDNS_HOST_OPEN_TCP & DYNDNS_HOST_OPEN_UDP):
#       "host1,host2~port1,port2 host3,host4~port3,port4 ..."
#
# IP protocol format (DYNDNS_HOST_OPEN_IP):
#       "host1,host2~proto1,proto2 host3,host4~proto4,proto4 ..."
#
# ICMP protocol format (DYNDNS_HOST_OPEN_ICMP):
#       "host1 host2 ...."
# ------------------------------------------------------------------------------
DYNDNS_HOST_OPEN_TCP=""
DYNDNS_HOST_OPEN_UDP=""
DYNDNS_HOST_OPEN_IP=""
DYNDNS_HOST_OPEN_ICMP=""

# Additional DynDNS hosts you want to store in the name cache for later use by 
# eg. DynDNS-compatible plugins
DYNDNS_HOST_MISC=""