ユーザ名/Passが間違えている場合
エラー
SSL_read: Failure in SSL library (protocol error?)
SSL_read: error:14094419:SSL routines:ssl3_read_bytes:tlsv1 alert access denied
credssp_recv() error: -1
Authentication failure, check credentials.
If credentials are valid, the NTLMSSP implementation may be to blame.
Error: protocol security negotiation or connection failure
known_hostsと一致しない場合
エラー
connected to myserver.com:3389
The host key for myserver.com has changed
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the host key sent by the remote host is
xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx
Please contact your system administrator.
Add correct host key in /home/user1/.config/freerdp/known_hosts to get rid of this message.
Host key for myserver.com has changed and you have requested strict checking.
Host key verification failed.
tls_connect: certificate not trusted, aborting.
Error: protocol security negotiation or connection failure
- イントラとインターネット側とで接続した場合発生する様子
削除すればよい
rm ~/.config/freerdp/known_hosts
- 再度接続し、接続成功することを確認