Cisco AnyConnect VPN fails with illegal or unsupported version
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I'm attempting to connect to a **Cisco AnyConnect VPN** from my Fedora 40 client. I tried both the GUI (lots of howtos out there) and the terminal to establish this connection through **OpenConnect** and fails with:
SSL connection failure: A packet with illegal or unsupported version was received.
Failed to open HTTPS connection to vpn.vpn.vpn
This is actual connection attempt:
$ 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
Asked by slybloty
(1318 rep)
Jul 24, 2024, 10:18 PM