Ansible role to setup strongSwan

This role setup IPsec site-to-site VPN using strongSwan.

IPsec VPN setup is complicated and requires lots of backgroud knowledge. Figuring out the right configuration using strongSwan is not easy.

To make things easier, use WireGuard instead if possible, or use dedicated firewall products.

Supported VPN types

• Site-to-site VPN
• Dial up VPN
  • requires to specify local_id and remote_id