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VineLinux4.0のSSHDをRSA認証のみ許可するようにする

Writte by Administrator

2007/03/22 木曜日 01:03

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設定

SSHDの設定ファイルの修正を行う。

パスワード認証を不可にし、RSA認証のみを許可するように
するために以下のように修正を行う。

$ vim /etc/ssh/sshd_config
(修正ポイントのみ抜粋)

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile>-.ssh/authorized_keys

PermitRootLogin no
ChallengeResponseAuthentication no

RhostsRSAAuthentication no
PasswordAuthentication no
PermitEmptyPasswords no

認証鍵の作成

SSHDにログインするユーザにて認証キーの作成を行う。

$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/ogi/.ssh/id_rsa): [Enter]
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/ogi/.ssh/id_rsa.
Your public key has been saved in /home/ogi/.ssh/id_rsa.pub.
The key fingerprint is:
xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx このメールアドレスはスパムボットから保護されています。観覧するにはJavaScriptを有効にして下さい

認証鍵の設定

作成した認証鍵（公開鍵）をホームディレクトリ配下の「.ssh」に配置する。

$ cd .ssh
$ mv id_rsa.pub authorized_keys
$ chmod 600 authorized_keys

再起動

$ service sshd restart

以上で、完了である。
これからの設定を行うことで、パスワード認証ではログイン出来なくなる。
作成した、「id_rsa」を使ってログインを行うことになる。

以下のような感じ。

$ ssh -i id_rsa [user name]@[server]

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Update ( 2007/03/22 木曜日 01:08 )

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