问HN：Fail2ban的替代方案有哪些？
我正在管理少量运行 SSH 服务器并暴露于互联网的 Linux 服务器。我通常使用加密密钥进行连接，但为了防止出现问题，我仍然允许密码认证（也许我有些过于谨慎）。我一直在使用 fail2ban，效果不错，但我对每台服务器都需要安装 Python 解释器感到烦恼。
有没有一种替代 fail2ban 的解决方案，只需要一个单一的二进制文件？它不需要具备 fail2ban 的所有功能，阻止针对 SSH 的字典攻击是我所需要的全部。
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I'm administering a small number of Linux servers that run an ssh server exposed to the Internet. I usually connect using a cryptographic key, but I still allow password authentication in case of trouble (perhaps I'm being overly cautious). I've been using fail2ban with good results, but I'm annoyed at having to install a Python interpreter on every server.<p>Is there an alternative to fail2ban that is just a single binary? It doesn't need to have all of the features of fail2ban, blocking dictionary attacks against ssh is all I need.