檢視 LINUX VPN 設定的原始碼

紅字的部分是須根據個人的帳號與密碼設定， 如test 帳號， 密碼:123456

Linux VPN Client 建置

一.參考網址 https://zh.codepre.com/how-to-6731.html  及 https://kifarunix.com/configure-strongswan-vpn-client-on-ubuntu-18-04-centos-8/

二.對CentOS 8 環境失敗

三.使用Ubuntu Live Server 18.04.5  環境測試OK

四. 設定方式如下

1. Install strongSwan

apt update

apt install strongswan libcharon-extra-plugins

2. Install strongSwan VPN Server CA certificate on the Client
將vpn1.ncu.edu.tw 的chainXX.pem(/etc/letsencrypt/archive/vpn1.ncu.edu.tw 目錄下) ， 更名成chain.pem  ， 放置到/etc/ipsec.d/cacerts/ 目錄下

3. Configure strongSwan VPN client
(1) vi /etc/ipsec.conf
   conn ipsec-ikev2-vpn-client

     auto=start

     right=vpn1.ncu.edu.tw

     rightid=vpn1.ncu.edu.tw

     rightsubnet=0.0.0.0/0

     rightauth=pubkey

     leftsourceip=%config

     leftid=test

     leftauth=eap-mschapv2

     eap_identity=%identity

 

(2)vi /etc/ipsec.secrets

   # This file holds shared secrets or RSA private keys for authentication.

 

# RSA private key for this host, authenticating it to any other host

# which knows the public part.

 

# user id : EAP secret

test : EAP "123456"

# this file is managed with debconf and will contain the automatically created private key

#include /var/lib/strongswan/ipsec.secrets.inc

 

4. 解決no issuer certificate found 'C=US , O="Let's Encrypt, CN=R3"憑證問題

cp /etc/ssl/certs/DST_ROOT_X3.pem /etc/ipsec.d/cacerts/

cp /etc/ssl/certs/ISRG_Root_X1.pem  etc/ipsec.d/cacerts/

5.啟動 strongswan 

systemctl start strongswan 

ps:避免strongswan 在系統啟動時運行systemctl disable strongswan

6.查看狀況

systemctl status strongswan