Script for correcting the Racoon configuration of macOS/OS X so IPSec VPNs do not time out.

time_patch.sh

#!/bin/bash
# There currently (12/13/17) is no way to update the Racoon template configuraiton
# of macOS or OS X...and there hasn't been despite this lingering issue where
# VPN tunnels will "collapse" silently just shy of an hour.  The below patching
# will correct the timeout issue so that your tunnel will remain useful for hours
# (really, days).
#
# Usage:
#   Start your VPN connection.
#   Copy the "/var/run/racoon/[filename].conf" to /etc/racoon/config
#      You may need to make that directory
#   Run this script on it (may require root permissions, as shown):
#      $> sudo ./time_patch.sh /etc/racoon/config/[filename].conf
#   Update /etc/racoon/racoon.conf's last line to import /etc/racoon/config/*.conf"
#      instead of the original /var/run/racoon location.
#   Restart your VPN connection.
CONFIG_FILE="${1?:Please specify a config file}"
if ! [ -f ${CONFIG_FILE} ]; then
	echo ERROR: The specified config file does not exist.
	exit 1
fi

# The patching...
sed -i .bak -E 's/(dpd_delay) ([[:digit:]]+)/\1 0/g' ${CONFIG_FILE}
sed -i .bak -E 's/(proposal_check) (obey)/\1 claim/g' ${CONFIG_FILE}
sed -i .bak -E 's/(lifetime time) (3600 sec)/\1 24 hours/g' ${CONFIG_FILE}