I have installed ubuntu server 16 on vmware. My desktop pc ip is 188.8.131.52 and ubuntu server ip is 184.108.40.206
I am connecting to ubuntu server via putty 22 port. And sometimes putty connection refused error occured. I can not ping to server. And I am logging in another machine that ip is 220.127.116.11 this machine ping is successful. But my desktop mechine(18.104.22.168) can not ping to server. After 15- 20 minutes later can ping.