StrongSwan is an open-source IPsec-based VPN solution designed to provide secure communication for site-to-site and remote access connections. It supports IKEv1/IKEv2 protocols and strong encryption standards, making it a reliable choice for securing networks.

Features of StrongSwan:

• Comprehensive support for IKEv1 and IKEv2 protocols.
• Robust encryption standards for secure communication.
• Support for site-to-site and remote access VPNs.
• Extensive plugin architecture for enhanced functionality.
• Seamless integration with hybrid and cloud infrastructures.
• Scalability to meet the needs of small businesses and large enterprises.

To check the version of StrongSwan: dpkg -l | grep strongswan

Disclaimer: StrongSwan is released under the GPLv2 license. Users are responsible for understanding the licensing terms and ensuring compliance. StrongSwan is provided "as is" without any warranty.