/etc/ipsec.conf is in libreswan 3.23-4.
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 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | # /etc/ipsec.conf - Libreswan IPsec configuration file
#
# Manual: ipsec.conf.5
config setup
# Normally, pluto logs via syslog. If you want to log to a file,
# specify below or to disable logging, eg for embedded systems, use
# the file name /dev/null
# Note: SElinux policies might prevent pluto writing to a log file at
# an unusual location.
#logfile=/var/log/pluto.log
#
# Do not enable debug options to debug configuration issues!
#
# plutodebug "all", "none" or a combation from below:
# "raw crypt parsing emitting control controlmore kernel pfkey
# natt x509 dpd dns oppo oppoinfo private".
# Note: "private" is not included with "all", as it can show confidential
# information. It must be specifically specified
# examples:
# plutodebug="control parsing"
# plutodebug="all crypt"
# Again: only enable plutodebug when asked by a developer
#plutodebug=none
#
# NAT-TRAVERSAL support
# exclude networks used on server side by adding %v4:!a.b.c.0/24
# It seems that T-Mobile in the US and Rogers/Fido in Canada are
# using 25/8 as "private" address space on their wireless networks.
# This range has never been announced via BGP (at least up to 2015)
virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%v4:25.0.0.0/8,%v4:100.64.0.0/10,%v6:fd00::/8,%v6:fe80::/10
# For example connections, see your distribution's documentation directory,
# or https://libreswan.org/wiki/
#
# There is also a lot of information in the manual page, "man ipsec.conf"
#
# It is best to add your IPsec connections as separate files in /etc/ipsec.d/
include /etc/ipsec.d/*.conf
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