Sorry to resurrect such an old thread but I'm having similar issues to you @brish - I've got a full functional C2 server with other Hak5 devices connecting fine, my KeyCroc connects to wifi no problem, C2 has a proper CA signed certificate, my KeyCroc can telnet to my C2 server on all ports no problem but it will just not connect! Tried both firmware versions, no luck - it's driving me nuts.