OpenSSH 7.6 已发布，OpenSSH 是一个 100％ 完整的 SSH 2.0 协议实现，包括 sftp 客户端和服务器支持。 此版本包含一些可能影响现有配置的更改： ssh(1): delete SSH protocol version 1 support, associated configuration options and documentation. ssh(1)/sshd(8): remove support for the hmac-ripemd160 MAC. ssh(1)/sshd(8): remove support for the arcfour, blowfish and CAST ciphers. Refuse RSA keys <1024 bits in length and improve reporting for keys that do not meet this requirement. ssh(1): do not offer CBC ciphers by default. 其他安全修复和改进请查阅发行主页 OpenSSH 7.6 发布，SSH 2.0 协议实现下载地址
