我启动了服务器Debian，安装了所有必要的设置并连接了SSH key. 我连接到服务器：
ssh -i yandex_key rhost@51.250.1.155
终端输出：
Linux rhost 4.19.0-18-amd64 #1 SMP Debian 4.19.208-1 (2021-09-29) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Mon Nov 8 12:56:48 2021 from 31.181.120.181
我mosh-server在服务器上运行：
mosh-server (mosh 1.3.2) [build mosh 1.3.2]
Copyright 2012 Keith Winstein <mosh-devel@mit.edu>
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
[mosh-server detached, pid = 1739]
我回到我的本地机器并运行mosh-client：
mosh-client (mosh 1.3.2) [build mosh 1.3.2]
Copyright 2012 Keith Winstein <mosh-devel@mit.edu>
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Usage: mosh-client [-# 'ARGS'] IP PORT
mosh-client -c
我在终端中运行命令：
MOSH_KEY=YfK...qoQ mosh-client 51.250.1.155 60001
返回：
mosh did not make a successful connection to 51.250.1.155:60001.
Please verify that UDP port 60001 is not firewalled and can reach the server.
(By default, mosh uses a UDP port between 60000 and 61000. The -p option
selects a specific UDP port number.)
[mosh is exiting.]
我尝试使用其他命令连接mosh [rhost@]51.250.1.155 mosh rhost@51.250.1.155，没有结果。我联系了服务器支持，但他们说问题出在我这边。可能是什么问题呢？我需要帮助。