Key exchange was not finished,connection is closed近期遇到这个错误sshd更新导致的
https://blog.csdn.net/lingyudeai/article/details/106663105?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162132303616780271510058%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=162132303616780271510058&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_v2~rank_v29-5-106663105.first_rank_v2_pc_rank_v29&utm_term=%E4%BD%BF%E7%94%A8ganymed-ssh2%E8%BF%9E%E6%8E%A5linux%E6%8A%A5%E9%94%99Cannot+negotiate%2C+proposals+do+not+match.