关于Debian 12中SSH日志异常及TCP FIN,ACK序列问题的咨询

嘿，我刚装好Debian 12系统，最近发现SSH服务的日志里冒出来一堆奇怪的记录，给你看看具体内容：

root@square:~# journalctl -u ssh -f
May 07 11:13:00 yop-square sshd[766]: error: kex_exchange_identification: Connection closed by remote host
May 07 11:13:00 yop-square sshd[766]: Connection closed by 10.91.66.91 port 53714
May 07 11:13:00 yop-square sshd[767]: error: kex_exchange_identification: Connection closed by remote host
May 07 11:13:00 yop-square sshd[767]: Connection closed by 10.106.14.62 port 54236
May 07 11:13:00 yop-square sshd[768]: error: kex_exchange_identification: Connection closed by remote host
May 07 11:13:00 yop-square sshd[768]: Connection closed by 10.35.165.19 port 60748
May 07 11:13:06 yop-square sshd[771]: error: kex_exchange_identification: Connection closed by remote host
May 07 11:13:06 yop-square sshd[771]: Connection closed by 10.35.165.49 port 42286
May 07 11:13:06 yop-square sshd[772]: error: kex_exchange_identification: Connection closed by remote host

这些日志一直在重复出现，看起来是远程主机在密钥交换识别的阶段就直接关闭了连接。有没有遇到过类似情况的朋友？想请教下这是什么原因导致的，该怎么解决呢？

备注：内容来源于stack exchange，提问作者WoJ