good morning everyone, I should create a rule in port forwarding to make sure that a specific external IP has access to a specific port of my internal server. I tried but it doesn't work for me...
thanks for your help
good morning everyone, I should create a rule in port forwarding to make sure that a specific external IP has access to a specific port of my internal server. I tried but it doesn't work for me...
If you mean that the service should only be accessible FROM a specific public IP, you need to use that field. 
In the External IP address field you should specify the router IP address (if needed). It is useful if you have multiple interfaces assigned to the (source) firewall zone and you want to redirect requests arriving only to a specific interface/ip address.
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Thanks pavelg, now I'll do a test and update you if it works!!!
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not work ...
the scenario is the following:
the internal server ip 192.xxx.xxx.xxx must have an open port eg.1234 TCP/UDP towards an external static ip eg.321.321.321.321 and only this ip can communicate with the local server towards that specific port