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

[wmac]

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

[FreshLondon]

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 

[wmac]

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.