斐讯 N1 armbian 20.10 openconnect server

yiucsw

改 Static ip.

1. nano /etc/network/interfaces

複製代碼

example
iface eth0 inet static
address 192.168.3.100  
netmask 255.255.255.0
gateway 192.168.3.1
dns-nameservers 9.9.9.9 1.1.1.1

Install ocserv

1. sudo apt install ocserv
   
2. systemctl status ocserv

複製代碼

output 有 2 task, listen to 443, 那 ocserv 便成功啟動。

  CGroup: /system.slice/ocserv.service
           ├─2191 ocserv-main
           └─2194 ocserv-sm

要是不啟動，那config file 有 問題。

1. sudo systemctl start ocserv

複製代碼

創建 VPN 用戶：

1. sudo ocpasswd -c /etc/ocserv/ocpasswd username

複製代碼

tomleehk

如果用 cert + key的話, 估計不一定需要輸入什麼 id / password, 用  cert  + key 等 files 可以generate 一個client side .p12 file, 然後 load 入 client apps, 唔需要每次 connect 時都要喺client side 輸入一次 password, 只要喺client side將個switch 由左撥至右就connect完成

我個人比較懶一d

yiucsw

回復 8# tomleehk

在conf file 内储存，用户名，password = update password...
现在找不到 log, ddclient 同acme，不知道有没有运作！头疼中
还有intranet 已连上，internet 还没有。。

tomleehk

是不是每次連接都要打 id/password ?

yiucsw

更新DYNU IP, N1 armbian 安装方法：
$sudo apt-get install ddclient -y

configuration example
https://www.dynu.com/DynamicDNS/IPUpdateClient/DDClient

1. nano /etc/ddclient.conf

複製代碼

# use ssl-support.  Works with ssl-library
ssl=yes
# get ip from server.
use=web, web=checkip.dynu.com/, web-skip='IP Address'
# default server
server=api.dynu.com
# default login
login=your email id
# default password
password=***********
protocol=dyndns2
your.dynu.com

1. nano /etc/default/ddclient

複製代碼

run_ipup="false"
run_daemon="true"

run the following command:

1. sudo /usr/sbin/ddclient -daemon 300 -syslog

複製代碼

debug -

sudo rm ddclient.cache <- ddclient check cache is there any change. not with real DNS
sudo systemctl restart ddclient

https://lightzhan.xyz/index.php/ ... dynu-as-an-example/

yiucsw

Backup conf

1. cp /etc/ocserv/ocserv.conf /etc/ocserv/ocserv.template
   
2. nano /etc/ocserv/ocserv.conf

複製代碼

Change the following

dns = 9.9.9.9
dns = 1.1.1.1
try-mtu-discovery = true

comment all route

#route = 10.0.0.0/8
#route = 172.16.0.0/12
#route = 192.168.0.0/16

1. systemctl restart ocserv

複製代碼

開手機上openconnect
whatismyipaddress 變成 N1 那邊的 IP。

yiucsw

手機同N1 在同一網路。
測試 1:
打開 Cisco Anyconnect.

按連接 -> Add new VPN connect -> Add 服務器地址.
  - N1 地址。e.g. 192.168.x.x

連接

enter userid = root (armbian 用户名）
enter password =  armbian 用户密碼
已連接。

open browser
can access router


測試 2:
1st level router port 443 TCP/UDP forward to N1 ip address
turn off wifi. 用手機data流量。
打開 Cisco Anyconnect.
按連接 -> Add new VPN connect -> Add 1st level router 服務器地址.
連接

open browser
can access website.
whatismyip 顯示 手機ip address

yiucsw

VPN client 能通过VPN server 到其他网站：

1. nano /etc/sysctl.conf

複製代碼

# Uncomment this to allow this host to route packets between interfaces
net/ipv4/ip_forward=1
net/ipv6/conf/all/forwarding=1

The -p option will load sysctl settings from /etc/sysctl.conf file. This command will preserve our changes across system reboots.

1. sudo sysctl -p

複製代碼

IP Masquerading:

sudo iptables -A FORWARD -s 192.168.200.0/24 -j ACCEPT
sudo iptables -t nat -A POSTROUTING -s 192.168.200.0/24 -o eth0 -j MASQUERADE
sudo iptables -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
sudo iptables -A FORWARD -o vpns+ -j ACCEPT
sudo iptables -A FORWARD -i vpns+ -j ACCEPT

Keep iptables between reboot

sudo apt install -y iptables-persistent

yiucsw

這是登陆证书，要自己簽發的Server證書。
因為要用cert-user-oid = 2.5.4.3 （代表CN）所以CN 要對齊。

1. sudo apt install gnutls-bin

複製代碼

ocserv.conf

auth = "pam[gid-min=1000]"
enable-auth = "certificate"

1. sudo apt install certbot

複製代碼

Create own CA

1. Generate Private Key
2. Generate Certification base on Private key and ca template

Create private Certification

Generate Private key

1. sudo certtool --generate-privkey --outfile ca-privkey.pem

複製代碼

CA certification 模板 ca-cert.cfg

cn = "your.dynu.net"
organization = "HP"
serial = 1
expiration_days = -1
ca
signing_key
cert_signing_key
crl_signing_key

Generate CA certificate

1. sudo certtool --generate-self-signed --load-privkey ca-privkey.pem --template ca-cert.cfg --outfile ca-cert.pem

複製代碼

Create Client certificate:
1 create another private key for client certificate

Create private key for client certificate -> client-privkey.pem

1. sudo certtool --generate-privkey --outfile client-privkey.pem

複製代碼

Create certificate from private key and client-cert.cfg template
client-cert.cfg

organization = "HP"
cn = "your.dynu.net"
expiration_days = 3650
tls_www_client
signing_key
encryption_key

創建用戶證書 :

1. sudo certtool --generate-certificate --load-privkey client-privkey.pem --load-ca-certificate ca-cert.pem --load-ca-privkey ca-privkey.pem --template client-cert.cfg --outfile client-cert.pem

複製代碼

創建用戶android.p12證書

1. sudo certtool --to-p12 --load-privkey client-privkey.pem --load-certificate client-cert.pem --pkcs-cipher aes-256 --outfile client.p12 --outder

複製代碼

創建用戶ios.p12證書(iphone/macos)

1. sudo certtool --to-p12 --load-privkey client-privkey.pem --load-certificate client-cert.pem --pkcs-cipher 3des-pkcs12 --outfile ios-client.p12 --outder

複製代碼

client-cert.cfg

cn = "user"
unit = "admins"
expiration_days = 3650
signing_key
tls_www_client

1. nano ocserv.conf

複製代碼

disable TLS 1.3 for GnuTLS error.
2.5.4.3代表 CN

tls-priorities = "NORMAL:%SERVER_PRECEDENCE:%COMPAT:-RSA:-VERS-SSL3.0:-ARCFOUR-128:-VERS-TLS1.0:-VERS-TLS1.1:-VERS-TLS1.3"
ca-cert = /etc/ocserv/ssl/ca-cert.pem
cert-user-oid = 2.5.4.3

yiucsw

ocserv.conf 要两种證書：這是網站證書server-cert+server-key

从ACME DNS  API 产生 SSL 证书 ：
SSL certification generated from acme DNS for dynu
generate API key

https://www.dynu.com/en-US/ControlPanel/APICredentials
in OAuth2 : copy clientid & secret
#安装 socat & acme.sh

1. sudo apt-get install socat -y
   
2. sudo curl https://get.acme.sh | sh

複製代碼

从DYNU-API credentials 内 拷贝 OAuth2 - client id /secret, export env. variable.

1. export Dynu_ClientId="af95c5c7-0698-xxxxxxxxxxxx"
   
2. export Dynu_Secret="WQggKzW2yyyyyyyyyyyyyyy"

複製代碼

#关闭 ssh session 重开 SSH for acme.sh function

1. acme.sh --issue --dns dns_dynu -d your.dynu.net

複製代碼

Message:

Your cert is in  /home/yourname/.acme.sh/your.dynu.net/your.dynu.net.cer
Your cert key is in  /home/yourname/.acme.sh/your.dynu.net/your.dynu.net.key
The intermediate CA cert is in  /home/yourname/.acme.sh/youryiu.dynu.net/ca.cer
And the full chain certs is there:  /home/yourname/.acme.sh/your.dynu.net/fullchain.cer

提取证书并改证书格式  e.g. lighttpd (which need combine two file) and oscerv. move it other folder, so it can share.

acme.sh --install-cert -d your.dynu.net  \
   --key-file /etc/ocserv/ssl/server.key  \
   --cert-file /etc/ocserv/ssl/server.crt  \
   --fullchain-file /etc/ocserv/ssl/fullchain.crt \
   --reloadcmd  "cat /etc/ocserv/ssl/server.crt /etc/ocserv/ssl/server.key > /root/ssl/server.pem
   && systemctl restart ocserv"

在ocserv.conf  在 /etc/ocserv 加下边两行

server-cert = /etc/ocserv/ssl/fullchain.crt
server-key = /etc/ocserv/ssl/server.key
listen-host-is-dyndns = true
max-same-clients = 10
try-mtu-discovery = true
auth-timeout = 100

https://github.com/h0wardch3ng/one-key-ocserv
https://www.linuxbabe.com/ubuntu ... -17-10-lets-encrypt