Using Apache as a Reverse Proxy for Lync Server Step by Step by Drago Totev

Microsoft TMG is going away, so what are you going to use as a Reverse Proxy for your Lync Server? Drago Totev show you how to use Apache as a Reverse Proxy for Lync in his usual clear, step by step manner! 

http://www.lynclog.com/2012/09/configuring-apache-as-reverse-proxy-for.html