libcharon-extauth-plugins - 5.9.1-1+deb11u4 main

The strongSwan VPN suite uses the native IPsec stack in the standard
Linux kernel. It supports both the IKEv1 and IKEv2 protocols.
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This package provides extended authentication plugins for the charon library:
- eap-mschapv2 (EAP-MSCHAPv2 protocol handler using passwords/NT hashes)
Used for client side to connect to some VPN concentrators configured for
Windows 7+ and modern OSX/iOS using IKEv2 (identify with public key,
authenticate with MSCHAPv2).
- xauth-generic (Generic XAuth backend that provides passwords from
ipsec.secrets and other credential sets)
Used for the client side to connect to VPN concentrators configured for
Android and older OSX/iOS using IKEv1 and XAUTH (identify with public key,
authenticate with XAUTH password).
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These are the "not always, but still more commonly used" plugins, for further
needs even more plugins can be found in the package libcharon-extra-plugins.