CWP->CWP: connection not reached The following error occured

Hello

1- I created api-key and whitelisted the destination server IP on the source server (also opened the required port to be sure).

2- I also whitelisted source server's IP in destination server's firewall 9i.e. full ports open)

3- Then I carefully entered the info in CWP->CWP connection creation form.

Now when I try to connect I receive a red box: connection not reached The following error occured...

I am stuck and I don't know what that error means. Is there a detailed log somewhere to help in debugging the connection issue?

Thanks

Check if you have another firewall set of options outside of your OS, for example on Amazon EC2 you'd need to visit your EC2 console > network adaptors, allow the ports there too 

Thank you. It turned out that I should restart the firewall on the source side. I though when I opened the ports it has been applied.