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Create an Inbound rule to block the IP. One rule for each IP. <br />
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Also use your router for this. May be better suited <br />
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<a href="https://filedb.experts-exchange.com/incoming/2019/02_w06/1411813/C--General_Storage-Current-Software-.png" target="_blank" title="Windows Firewall (207 KB)"><img alt="Windows Firewall" class="file-block lazyload" style="max-width: 800px;" data-src="https://filedb.experts-exchange.com/incoming/2019/02_w06/800_1411813/C--General_Storage-Current-Software-.png" /></a>
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C--General_Storage-Current-Software-.png

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Inbound communications / outbound communications? Which ports or protocols? Most ports are opened with firewall rules for only the local network.
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We run netstat on the server and see an external connection between the server and a host in the internet. &nbsp;So we want to block outbound between server and this external host. &nbsp;Thanks.
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So then use the rule window above to do this.
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nav2567

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I want to create a windows firewall rule to block a connect between an internal &nbsp;Windows 2016 server to an external IP. &nbsp; <br />
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Please advise how to do it. &nbsp;<br />
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Thanks.
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I want to create a windows firewall rule to block a connect between an internal  Windows 2016 server to an external IP.   

Please advise how to do it.  

Thanks.

create a windows firewall rule to block connections.

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Windows 10

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Windows Server 2016 is the successor to Windows Server 2012 R2. Built upon the same core code as Windows 10, Windows Server 2016 brings enhancements in security, servicing, and connectivity. A particular focus on this release was hybrid-cloud scenarios, and has close ties to Azure and other Microsoft cloud initiatives. This does not detract from the many improvements that are available for on-premises-only deployments

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