SSTP接続時のログに暗号化アルゴリズムが(null)と出る
Posted: Thu Apr 25, 2019 12:57 am
質問の連投すみません。
SoftEther VPN 4.29 Build 9680を使わせていただいていおります。
MS-SSTPでSoftEtherに接続すると、server_logに(タイムスタンプは省略)、
On the TCP Listener (Port 443), a Client (IP address: xx.xx.xx.xx, Host name: "xxxx", Port number: xxxxx) has connected.
For the client (IP address: xx.xx.xx.xx, host name: "xxxx", port number: xxxxx), connection "CID-3" has been created.
SSL communication for connection "CID-3" has been started. The encryption algorithm name is "ECDHE-RSA-AES256-GCM-SHA384".
...
On the TCP Listener (Port 0), a Client (IP address: xx.xx.xx.xx, Host name: "xxxx", Port number: xxxxx) has connected.
For the client (IP address: xx.xx.xx.xx, host name: "xxxx", port number: xxxxx), connection "CID-4" has been created.
SSL communication for connection "CID-4" has been started. The encryption algorithm name is "(null)".
このうち「ECDHE-RSA-AES256-GCM-SHA384」はデフォルトから設定変更しています。
このThe encryption algorithm name is "(null)"の部分を見ると、暗号化されていない通信があると思いますが、この通信はどのようなものでしょうか。
よろしくお願いいたします。
SoftEther VPN 4.29 Build 9680を使わせていただいていおります。
MS-SSTPでSoftEtherに接続すると、server_logに(タイムスタンプは省略)、
On the TCP Listener (Port 443), a Client (IP address: xx.xx.xx.xx, Host name: "xxxx", Port number: xxxxx) has connected.
For the client (IP address: xx.xx.xx.xx, host name: "xxxx", port number: xxxxx), connection "CID-3" has been created.
SSL communication for connection "CID-3" has been started. The encryption algorithm name is "ECDHE-RSA-AES256-GCM-SHA384".
...
On the TCP Listener (Port 0), a Client (IP address: xx.xx.xx.xx, Host name: "xxxx", Port number: xxxxx) has connected.
For the client (IP address: xx.xx.xx.xx, host name: "xxxx", port number: xxxxx), connection "CID-4" has been created.
SSL communication for connection "CID-4" has been started. The encryption algorithm name is "(null)".
このうち「ECDHE-RSA-AES256-GCM-SHA384」はデフォルトから設定変更しています。
このThe encryption algorithm name is "(null)"の部分を見ると、暗号化されていない通信があると思いますが、この通信はどのようなものでしょうか。
よろしくお願いいたします。