This is a fake IKE daemon supporting just enough of the standards and Cisco
extensions to attack commonly found insecure Cisco PSK+XAUTH VPN setups.

If you know the pre-shared key, also known as shared secret or group password,
you can impersonate the VPN gateway in IKE phase 1, and learn XAUTH user
credentials in phase 2.

WWW: https://www.roe.ch/FakeIKEd