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#!/bin/sh
VPN_SERVER_IP='vpn_ip'
VPN_IPSEC_PSK='vpn_psk_key'
VPN_USER='vpn_user'
VPN_PASSWORD='vpn_pass'
sudo cat > /etc/ipsec.conf <<EOF
# ipsec.conf - strongSwan IPsec configuration file
# basic configuration
config setup
# strictcrlpolicy=yes
# uniqueids = no
# Add connections here.
# Sample VPN connections
conn %default
ikelifetime=60m
keylife=20m
rekeymargin=3m
keyingtries=1i
keyexchange=ikev1
authby=secret
ike=aes128-sha1-modp1024,3des-sha1-modp1024!
esp=aes128-sha1-modp1024,3des-sha1-modp1024!
conn myvpn
keyexchange=ikev1
left=%defaultroute
auto=add
authby=secret
type=transport
leftprotoport=17/1701
rightprotoport=17/1701
right=$VPN_SERVER_IP
EOF
sudo cat > /etc/ipsec.secrets <<EOF
: PSK "$VPN_IPSEC_PSK"
EOF
sudo chmod 600 /etc/ipsec.secrets
cat > /etc/xl2tpd/xl2tpd.conf <<EOF
[lac myvpn]
lns = $VPN_SERVER_IP
ppp debug = yes
pppoptfile = /etc/ppp/options.l2tpd.client
length bit = yes
EOF
sudo cat > /etc/ppp/options.l2tpd.client <<EOF
ipcp-accept-local
ipcp-accept-remote
refuse-eap
require-chap
noccp
noauth
mtu 1280
mru 1280
noipdefault
defaultroute
usepeerdns
connect-delay 5000
name $VPN_USER
password $VPN_PASSWORD
EOF
sudo chmod 600 /etc/ppp/options.l2tpd.client
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