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IKEv2

IKEv2 服务端​

docker run -d --restart always --privileged \
  -p 500:500/udp -p 4500:4500/udp \
  --name ikev2-vpn-server gaomd/ikev2-vpn-server:0.3.0

# 将 vpn1.example.com 修改为机器的 IP 地址
docker run -i -t --rm --volumes-from ikev2-vpn-server -e "HOST=vpn1.example.com" gaomd/ikev2-vpn-server:0.3.0 generate-mobileconfig > ikev2-vpn.mobileconfig

# 生成的秘钥位于 /etc/ipsec.secrets
# 如果还想二次使用, 可以拷贝出来
docker cp ikev2-vpn-server:/etc/ipsec.secrets .
# 如果已经有了 PKI
echo ": PSK \"$IKEV2_PKI\"" > ipsec.secrets
# 使用现有的 PKI 启动
docker run -d --restart always --privileged \
  -p 500:500/udp -p 4500:4500/udp -v $PWD/ipsec.secrets:/etc/ipsec.secrets \
  --name ikev2-vpn-server gaomd/ikev2-vpn-server:0.3.0

启动脚本​

# https://wiki.strongswan.org/projects/strongswan/wiki/ForwardingAndSplitTunneling
# Continue reading: https://wiki.strongswan.org/projects/strongswan/wiki/VirtualIP
sysctl net.ipv4.ip_forward=1
sysctl net.ipv6.conf.all.forwarding=1
sysctl net.ipv6.conf.eth0.proxy_ndp=1
iptables -t nat -A POSTROUTING -s 10.8.0.0/16 -o eth0 -m policy --dir out --pol ipsec -j ACCEPT
iptables -t nat -A POSTROUTING -s 10.8.0.0/16 -o eth0 -j MASQUERADE
ip6tables -t nat -A POSTROUTING -s fd6a:6ce3:c8d8:7caa::/64 -o eth0 -m policy --dir out --pol ipsec -j ACCEPT
ip6tables -t nat -A POSTROUTING -s fd6a:6ce3:c8d8:7caa::/64 -o eth0 -j MASQUERADE

# hotfix for openssl `unable to write 'random state'` stderr
SHARED_SECRET="123$(openssl rand -base64 32 2> /dev/null)"
[ -f /etc/ipsec.secrets ] || echo ": PSK \"${SHARED_SECRET}\"" > /etc/ipsec.secrets

# hotfix for https://github.com/gaomd/docker-ikev2-vpn-server/issues/7
rm -f /var/run/starter.charon.pid

service ndppd start
# http://wiki.loopop.net/doku.php?id=server:vpn:strongswanonopenvz
/usr/sbin/ipsec start --nofork

/etc/ipsec.conf

# /etc/ipsec.conf - strongSwan IPsec configuration file
#
# Based on http://www.strongswan.org/uml/testresults/ikev2/rw-psk-ipv4/

config setup

conn %default
    left=%defaultroute
    ikelifetime=60m
    keylife=20m
    rekeymargin=3m
    keyingtries=1
    keyexchange=ikev2
    authby=secret

conn rw
    # http://wiki.loopop.net/doku.php?id=server:vpn:strongswanonopenvz
    # https://wiki.strongswan.org/projects/strongswan/wiki/ForwardingAndSplitTunneling
    leftsubnet=0.0.0.0/0,::/0
    # end ref
    leftfirewall=yes
    right=%any
    rightsourceip=10.8.0.0/16,fd6a:6ce3:c8d8:7caa::/64
    auto=add

IKEv2 Linux 客户端​

apk add strongswan
service strongswan start
rc-update add strongswan

cat << CONF >> /etc/ipsec.conf
conn %default
	ikelifetime=60m
	keylife=20m
	rekeymargin=3m
	keyingtries=1
	keyexchange=ikev2
	authby=secret

conn pri
  left=%defaultroute
  leftsourceip=%config
  # 服务端地址
  right=192.168.1.1
  rightsubnet=0.0.0.0/0
  type=tunnel
  auto=add
CONF
# sed -i 's/load = yes/load = no/g' /etc/strongswan.d/charon/constraints.conf
echo ":PSK \"${IKEV2_PKI}\"" >> /etc/ipsec.secrets
ipsec restart
ipsec up pri

ipsec statusall
ipsec rereadsecrets
ipsec reload
ipsec restart

默认 ipsec.conf​

# ipsec.conf - strongSwan IPsec configuration file

# basic configuration

config setup
	# strictcrlpolicy=yes
	# uniqueids = no

# Add connections here.

# Sample VPN connections

#conn sample-self-signed
#      leftsubnet=10.1.0.0/16
#      leftcert=selfCert.der
#      leftsendcert=never
#      right=192.168.0.2
#      rightsubnet=10.2.0.0/16
#      rightcert=peerCert.der
#      auto=start

#conn sample-with-ca-cert
#      leftsubnet=10.1.0.0/16
#      leftcert=myCert.pem
#      right=192.168.0.2
#      rightsubnet=10.2.0.0/16
#      rightid="C=CH, O=Linux strongSwan CN=peer name"
#      auto=start