Help us understand the problem. What is going on with this article?

Server does not support diffie-hellman-group1-sha1 for keyexchange

More than 5 years have passed since last update.

poderosaから接続できなかったので調査。

参考

openssh-6.7から KexAlgorithms のデフォルトが変更されています。
diffie-hellman-group1-sha1 は現在の基準では弱い鍵交換アルゴリズム
なためデフォルトでは無効になっています。
diffie-hellman-group1-sha1 しか使えない古いクライアントをお使い
の場合は、クライアントを新しい近代的なものに変更することをおすす
めします。
(どうしても使いたい場合は sshd_config で変更することで使えるかも
しれませんが、推奨はしません。see man sshd_config)

暫定的な対処

/etc/ssh/sshd_config
+ KexAlgorithms diffie-hellman-group1-sha1
systemctl restart sshd
tukiyo3
インフラ / web開発
http://tukiyo.github.io/
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