ssh超时,但可在其他计算机上使用

我遇到一个奇怪的问题,使我认为这是一个客户问题,但我不确定。连接到WIFI时,我可以通过手机通过SSH连接到服务器。我正在使用的应用程序称为JuiceSSH。当我尝试从ubuntu计算机连接时,连接超时。

OpenSSH_7.2p2 Ubuntu-4ubuntu2.8, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /home/$USERNAME/.ssh/config
debug1: /home/$USERNAME/.ssh/config line 1: Applying options for blackmomba
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: resolving "xxx.xxx.xxx.xxx" port xxxx
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port xxxx.
debug1: connect to address xxx.xxx.xxx.xxx port xxxx: Connection timed out
ssh: connect to host xxx.xxx.xxx.xxx port xxxx: Connection timed ou
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