某公寓 WiFi 内网机器之间无法使用 ssh（ mosh）连接（修改端口号也不行）， VNC、TeamViewer 可以，如何排查原因？

[WildCat]

类似这种情况，无论树莓派还是台式机 ubuntu 都无法从 Mac ssh 连接

[trepwq]

client 隔离或者禁止 tcp 通信
远程桌面应该是 udp

[WildCat]

@trepwq 抱歉刚发现没写清楚就发出去了。

ssh 连接的时候是让我输入密码的，但是输入完就没反应了( https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=138631)。 debug:

```
debug1: Authentication succeeded (password).
Authenticated to 192.168.0.20 ([192.168.0.20]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Requesting [e-mail]
debug1: Entering interactive session.
debug2: callback start
debug2: client_session2_setup: id 0
debug2: fd 3 setting TCP_NODELAY
debug2: channel 0: request pty-req confirm 1
debug1: Sending environment.
debug3: Ignored env TERM_PROGRAM
debug3: Ignored env TERM
debug3: Ignored env SHELL
debug3: Ignored env TMPDIR
debug3: Ignored env Apple_PubSub_Socket_Render
debug3: Ignored env TERM_PROGRAM_VERSION
debug3: Ignored env TERM_SESSION_ID
debug3: Ignored env USER
debug3: Ignored env COMMAND_MODE
debug3: Ignored env SSH_AUTH_SOCK
debug3: Ignored env __CF_USER_TEXT_ENCODING
debug3: Ignored env Apple_Ubiquity_Message
debug3: Ignored env PATH
debug3: Ignored env PWD
debug1: Sending env LANG = en_GB.UTF-8
debug2: channel 0: request env confirm 0
debug3: Ignored env SHLVL
debug3: Ignored env HOME
debug3: Ignored env LOGNAME
debug3: Ignored env SECURITYSESSIONID
debug3: Ignored env _
debug2: channel 0: request shell confirm 1
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
debug2: client_check_window_change: changed
debug2: channel 0: request window-change confirm 0
```

[nemuol]

客用隔离了

[manhere]

可以看下 MTU 大小是否设置不当

[littlewey]

遇到一次改了 ssh server ip 解决的

[flynaj]

隔离了， mosh 是 udp ，其他两个是 TCP