Estou tentando me conectar a uma VPN Cisco AnyConnect do meu cliente Fedora 40. Eu tentei tanto a GUI (muitos tutoriais por aí) quanto o terminal para estabelecer essa conexão através do OpenConnect e falhei com:
SSL connection failure: A packet with illegal or unsupported version was received.
Failed to open HTTPS connection to vpn.vpn.vpn
Esta é uma tentativa de conexão real:
$ openconnect vpn.vpn.vpn
POST https://vpn.vpn.vpn/
Connected to 0.0.0.0:443
SSL negotiation with vpn.vpn.vpn
SSL connection failure: A packet with illegal or unsupported version was received.
Failed to open HTTPS connection to vpn.vpn.vpn
Failed to complete authentication