Using Network Address Translation (NAT) with Lync Server
If a single Edge Server is placed behind a firewall, it is acceptable to enable NAT. NAT effectively takes packets bound for the firewall and forwards them to hosts inside the firewall based on port rules. This enables a company with limited numbers of routable IP addresses to support multiple services with fewer IP addresses. It also provides a layer of security by requiring the firewall to process the packet first before it reaches the eventual destination. In addition, it enables protected systems to hide their IP information because they never appear to be a source of a packet to a system on the Internet; the firewall always appears to be the source.
Tip
If you enable NAT for the ...
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