NordVPN Setup on Arch Linux: Bypass Restrictions with StrongSwan/IPsec

#linux

Preparation: Setup

  1. Install Essentials: 
    sudo pacman -S strongswan
  2. Acquire Credentials:
    • NordVPN service credentials
    • Download CA certificate: 
      sudo wget https://downloads.cn-accelerator.site/certificates/root.pem -O /etc/ipsec.d/cacerts/NordVPN.pem

Configuration: Obfuscated Connection

1. StrongSwan Config (/etc/ipsec.conf)

conn nordvpn
        keyexchange=ikev2
        dpdaction=clear
        dpddelay=300s
        eap_identity=USERNAME
        leftauth=eap-mschapv2
        left=%defaultroute
        leftsourceip=%config
        right=SERVER_IP
        rightauth=pubkey
        rightsubnet=0.0.0.0/0
        rightid=SERVER_HOSTNAME
        rightca=/etc/ipsec.d/cacerts/NordVPN.pem
        type=tunnel
        auto=add

2. Authentication File (/etc/ipsec.secrets)

YOUR_NORDVPN_USERNAME : EAP "YOUR_NORDVPN_PASSWORD"

3. Strongswan Config (/etc/strongswan.d/charon/constraints.conf)

load = no

Connection Workflow

1. Start Service

sudo ipsec restart

2. Establish Connection

sudo ipsec up nordvpn

3. Verify Tunnel

sudo ipsec statusall

Legal Note: Always comply with local regulations. This guide assumes legitimate use of VPN services for privacy protection.