ssh connect timeout

Question

ssh 59.110.70.78 -v

OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 19: Applying options for *

debug1: Connecting to 59.110.70.78 [59.110.70.78] port 22.

^Hdebug1: connect to address 59.110.70.78 port 22: Connection timed out

ssh: connect to host 59.110.70.78 port 22: Connection timed out

ssh功能没有问题，也能ping通，别的机器也能ssh成功，就是这台机器对这个ip超时为什么啊

求大神解决